Why?

  • 62 Replies
  • 13761 Views
?

DataOverFlow2022

  • 8424
  • +49/-96
Re: Why?
« Reply #30 on: January 11, 2023, 07:26:34 AM »

It actually has everything to do with it.

Which of your BS statements?

You
Quote

No. That's incomplete combustion. With more oxygen, you may be able to get a complete combustion.  But combustion relies on three things: heat, fuel, and oxygen. But in space, two of the three are missing.


Back to the liquid nitrogen video..

We know from the videos the rocket motors are going through a complete burn because the motors are actuating their end of burn ejection charges.

Now.. look!






The fuel and oxidizer are having no trouble creating the reaction that is fire under the blanket of liquid nitrogen.


You
Quote
A vacuum tube itself is not a chamber of zero gravity,

What is that you quote about the fire triangle?  It’s actually the fire tetrahedron now..

Quote




Quote
so we're not seeing in addition to zero gravity (which I don't believe in, but devil's advocate) the airless condition.

Hmm.  Nothing about gravity or pressure in the fire tetrahedron.

You
Quote
This is the reality of outer space, stripped of all your smoke and mirrors. The rocket has nothing to hold onto. Nothing to push against. It is moving across a void.

So?

This is the simplification of how rockets work.


In a vacuum, you have nothing to move against. No ground, no water, no air.


The rocket fuel burns, expands, and exerts forward momentum to the rocket through this process as the gasses exit the nozzle. 

The rocket fuel burning, creating gases that take up tens to thousands times the space of the fuel, with kinetic energy is providing the “matter”..

It’s a controlled explosion.

Quote



Figure 1.1 shows a combustion chamber with an opening, the nozzle, through which gas can escape. The pressure distribution within the chamber is asymmetric; that is, inside the chamber the pressure varies little, but near the nozzle it decreases somewhat. The force due to gas pressure on the bottom of the chamber is not compensated for from the outside. The resultant force F due to the internal and external pressure difference, the thrust, is opposite to the direction of the gas jet. It pushes the chamber upwards.

http://www.braeunig.us/space/propuls.htm


The rocket engine provides it own fuel and oxidizer.  Through a controlled explosion providing the mass to push it along in the form of a large expanding gas bubble at the nozzle.

Quote
I know why "science" (really scientism) likes to make this claim. Because of this passage.

You haven’t shown any scientific evidence of your stance.

You
Quote
Well sorry but at the end of the day, you have no means of traveling anywhere in the outer darkness (but through God), 360k mph or 15 mph.

You understand comets are real?  What makes them go about the solar system.  We should be able to obtain similar speeds then glide about like a comet? Why could we not travel around the solar system at speeds and in a manner similar to comets?

Quote
Comet Encke has a perihelion (closest approach to the Sun) of 0.336 AU (50.3 million km; 31.2 million mi). At perihelion Comet Encke passes the Sun at 69.9 km/s (252,000 km/h). Of the numbered comets less than 321P, only 96P/Machholz gets closer to the Sun.[12]

https://en.m.wikipedia.org/wiki/Comet_Encke#Orbit
« Last Edit: January 11, 2023, 07:42:57 AM by DataOverFlow2022 »

?

Unconvinced

  • 4085
  • +55/-73
Re: Why?
« Reply #31 on: January 11, 2023, 10:41:49 AM »

This is the reality of outer space, stripped of all your smoke and mirrors. The rocket has nothing to hold onto. Nothing to push against. It is moving across a void.

Ah, this old classic.  Rockets “push against” the propellant they are shooting out the back end.  Propellant goes backwards, rocket goes forwards. 

Quote
I know why "science" (really scientism) likes to make this claim. Because of this passage.

Quote
2Now the earth was formless and void, and darkness was over the surface of the deep. And the Spirit of God was hovering over the surface of the waters.

It's a "sorry God, we not you, are able to travel through the void of outer darkness."

 But such things have no conventional rules of motion. Traveling high numbers of speed (which inflated tenfold because they realized it wouldn't get them anywhere)? Yeah in your dreams.

It is because God is God that he can move across the void. We are humans, and obey laws of physics. Such laws when observed mean that if we accept gravity as a reality, then we are bound by the idea that away from Earth, we are not drawn towards anything. God makes the rules, an atheist building a rocket pretends they don't have to follow them.

Well sorry but at the end of the day, you have no means of traveling anywhere in the outer darkness (but through God), 360k mph or 15 mph.

Nah.  Science is about figuring out how stuff works.  Applied science is about making useful things out of that knowledge, like all the technology that we all rely on.

It’s not about attacking your religion.  Many scientists, engineers etc are religious too.  Some would even say they are trying to understand His creation.

And yes, there are rules of motion, the ones we have figured out.  If God really did make them, maybe  you should try learning them instead of dreaming up your own nonsense?

*

JackBlack

  • 26157
  • +51/-79
Re: Why?
« Reply #32 on: January 11, 2023, 12:04:21 PM »
A vacuum tube itself is not a chamber of zero gravity
Who cares?
That is in no way relevant to the fact that rockets can and do ignite and provide thrust in a vacuum without getting oxygen from the air.

This is the reality of outer space, stripped of all your smoke and mirrors. The rocket has nothing to hold onto. Nothing to push against. It is moving across a void.
It doesn't need to hold onto anything.
It pushes off the combustion products.
All the air does is slow it down.

I know why "science" (really scientism) likes to make this claim. Because of this passage.
Science doesn't give a damn about your book of garbage.
If you need to appeal to religious BS then you have already lost.

I get it; you can't handle reality so you cling to a delusional fantasy to pretend the universe is tiny and you are very important.
But reality doesn't give a damn.
You not being able to accept reality doesn't mean your fantasy is true.

But such things have no conventional rules of motion. Traveling high numbers of speed (which inflated tenfold because they realized it wouldn't get them anywhere)?
And more delusional BS. You have no justification at all for these speeds being inflated.
You are yet to demonstrate any fault with rockets moving through the vacuum of space.
Rockets in space still obey the conventional laws of motion.
You just outright reject them because it means can destroy your fantasy.

It is because God is God that he can move across the void.
No, it is because it is fictional BS that anything can happen.
When you are writing a fantasy like the Bible you can do anything, including repeatedly contradict yourself.

Such laws when observed mean that if we accept gravity as a reality, then we are bound by the idea that away from Earth, we are not drawn towards anything.
And more delusional BS.
If you accept the reality of gravity, that means you are attracted to all other masses, with a force proportional to the mass, and inversely proportional to the square of the distance.
So if you are near Earth, that will be the most significant. But if you land on the moon, the attraction to the moon will be the most significant, but you will still be attracted to Earth, as the Moon (and you) will continue to orbit Earth.
And in either case you would still be attracted to the sun.

God makes the rules
Considering your god is a delusional fantasy made up by primitive men to pretend they knew things they didn't and order to people around, the only things it makes are in a delusional fantasy.

Well sorry but at the end of the day, you have no means of traveling anywhere in the outer darkness (but through God), 360k mph or 15 mph.
Except things like rockets.
Your wilful rejection of reality has no impact on it.
You rejecting it doesn't magically make rockets stop working.
You are yet to present a single coherent argument to justify your delusional BS which withstands even mild scrutiny.
And you now appear to have entirely given up on anything resembling a coherent argument and instead are just appealing to religious BS.

*

bulmabriefs144

  • 6256
  • +79/-78
  • Roco the Fox
Re: Why?
« Reply #33 on: January 11, 2023, 07:12:44 PM »

What is that you quote about the fire triangle?  It’s actually the fire tetrahedron now..




The tetraforce is heresy. Four is death. There is only Triforce.



But seriously, you can have chemical reactions that cause fire (for example, pyrophoric chemicals). But this doesn't change what this triangle is about. It's a triangle for determining flammability. It's for fire safety. You can snuff fires by removing their fuel source, smothering them (removing air), or blasting them with something cold or wet. You cannot however take away chemical reactions. Chemistry happens whether we like it or not. Not part of the triangle, and you have misunderstood its purpose.
If ρ=m/V, then B=ρsurfobj


Here's my Bible, if ya wanna read

*

JackBlack

  • 26157
  • +51/-79
Re: Why?
« Reply #34 on: January 12, 2023, 12:20:59 AM »
But this doesn't change what this triangle is about. It's a triangle for determining flammability. It's for fire safety.
That's right, so if you think you can put out a fire, by using a CO2 extinguisher, when the fire contains both a fuel and oxidiser like a rocket, you risk endangering yourself and others.

You cannot however take away chemical reactions. Chemistry happens whether we like it or not. Not part of the triangle, and you have misunderstood its purpose.
It is actually meant to be chemical chain reaction.
It is where the fire produces enough heat or reactive intermediates to be able to sustain its continued combustion.
Somethings will burn, but only in the presence of another flame. If you take away the flame it stops burning.
Other things will happily burn, and once ignited they will continue to burn.

But of course, once more you take the low hanging fruit and go for a pathetic deflection rather than to attempt to justify and defend your delusional BS.

Once more, the rocket has everything it needs.
It is clearly capable of igniting and providing thrust in a vacuum.
This demonstrates your claim is pure garbage.

?

DataOverFlow2022

  • 8424
  • +49/-96
Re: Why?
« Reply #35 on: January 12, 2023, 02:44:48 AM »

What is that you quote about the fire triangle?  It’s actually the fire tetrahedron now..




The tetraforce is heresy. Four is death. There is only Triforce.



But seriously, you can have chemical reactions that cause fire (for example, pyrophoric chemicals). But this doesn't change what this triangle is about. It's a triangle for determining flammability. It's for fire safety. You can snuff fires by removing their fuel source, smothering them (removing air), or blasting them with something cold or wet. You cannot however take away chemical reactions. Chemistry happens whether we like it or not. Not part of the triangle, and you have misunderstood its purpose.




Quote
https://ehs.unl.edu/sop/s-oxidizers_chem_haz_risk_min.pdf

Safe Operating Procedure


OXIDIZERS CHEMICAL HAZARDS & RISK MINIMIZATION

Extinguishing Agents for Oxidizer Fires
Extinguishing fires involving an oxidizer is difficult. A carbon dioxide extinguisher is not an effective choice for an oxidizer-fed fire because it works on the principle of excluding atmospheric oxygen, and atmospheric oxygen is not required for an oxidizer-fed fire. Dry chemical extinguishing agents will also be ineffective for the most part. They act to interrupt the chemical chain reaction, but will be overcome by the oxidizer in all but the smallest fires.
Water may be the only extinguishing agent that may be effective. Energy/heat generated during combustion must first drive off the water as steam and then reheat the surface of material to a sufficient temperature to support ignition. Some combustible materials (e.g., wood) can retain a lot of heat energy once they are hot. Adding water until the fire is out may not end the potential for fire. Instead, the combustible material may have the energy to drive off the water and still have enough residual heat to re-ignite. Camp fires re-igniting after being extinguished with water are an example of this. Therefore, water must be used in drenching quantities.
Water can also result in the fire spreading if it involves a non-miscible flammable liquid. In this situation evacuation and isolation of the fire may be the only option.
If the fire involves an oxidizing gas, then the gas supply should be shut-off (if it can be done so safely). This is the reason hospitals have remote oxygen shutoffs in hallways outside of rooms where the gas is used.



Quote
Safety Data Sheet
Trade name: Estes Model Rocket Engines (> 30g propellant)

P370+P380 In case of fire: Evacuate area.
P373 DO NOT fight fire when fire reaches explosives.


https://estesrockets.com/wp-content/uploads/SDS/Estes_Model_Rocket_Engines_Motors_Greater_Than_30.pdf




*

bulmabriefs144

  • 6256
  • +79/-78
  • Roco the Fox
Re: Why?
« Reply #36 on: January 12, 2023, 12:40:45 PM »
This heretic needs to be taught of our rich culture.

Our traditional folk songs, for instance.









And our pop music.



The nerve. Speaking such blasphemies like that there's a fourth triangle.

Yes, there are chemical causes to fire, but the treatment is 100% following the other three. Taking off a flaming chemical fire from heat source, tossing the chemical (a fuel) in the sink, and covering it to boot tames pretty much all forms of flame. Even the famed Greek Fire, which can burn on water, cannot set flame until its container is broken.

The reason an oxidizer fire can't be snuffed by carbon dioxide is because it bonds with the oxygen. ( CO2 + O2 -> C + 2O2) not because having an oxidizer is a magical free pass. The flame will still still be able to be snuffed if it has nowhere to go. A flame will not burn infinitely, as such a thing is in violation to themodynamics, so covering it (rather than feeding it carbon dioxide) will eventually exhaust it. Likewise, they recommend dousing it with water (lowers the heat).  But you know what? You can also burn the burning oxidizer (this removes the fuel by getting it to use itself up faster). 

A careful reading of this involves shutting off the fuel and applying water. It also doesn't dismiss the idea that you can smother such a fire, only that you can do so using chemicals like CO2. With that, I must share more folk melodies.


« Last Edit: January 12, 2023, 12:48:18 PM by bulmabriefs144 »
If ρ=m/V, then B=ρsurfobj


Here's my Bible, if ya wanna read

?

DataOverFlow2022

  • 8424
  • +49/-96
Re: Why?
« Reply #37 on: January 12, 2023, 01:27:58 PM »

The reason an oxidizer fire can't be snuffed by carbon dioxide is because it bonds with the oxygen. ( CO2 + O2 -> C + 2O2) not because having an oxidizer is a magical free pass.

What?

This is the what is in an Eastes rocket motor.

https://estesrockets.com/wp-content/uploads/SDS/Estes_Model_Rocket_Engines_Motors_Greater_Than_30.pdf


It’s basically black powder in a matrix

Quote


Potassium nitrate, also known as ‘saltpetre’, or ‘saltpeter’, decomposes at high temperature to provide oxygen for the reaction. This means that gunpowder doesn’t need to be exposed to air to burn – and is why smothering fireworks won’t stop them burning!

https://www.compoundchem.com/2014/07/02/the-chemistry-of-gunpowder/amp/

See above “Potassium nitrate, also known as ‘saltpetre’, or ‘saltpeter’, decomposes at high temperature to provide oxygen for the reaction.”

The decompression of Potassium nitrate.

Quote
Question:
Potassium nitrate decomposes to potassium nitrite and oxygen.


2KNO3(s)→2KNO2(s)+O2(g)
 
https://homework.study.com/explanation/potassium-nitrate-decomposes-to-potassium-nitrite-and-oxygen-2kno3-s-2kno2-s-plus-o2-g-what-volume-in-liters-of-o2-can-be-produced-from-the-decomposition-of-54-0-g-of-kno3-at-45-deg-c-and-1-15-atm.html

Now..

Quote
Carbon dioxide has a low temperature (-109° F as a solid), is highly inert under most conditions,

https://ilmoproducts.com/industries-served/welding-cutting/gases-their-applications/carbon-dioxide/


And..

Quote
The major hazard of carbon dioxide is asphyxiation when CO2 has built up in an area and displaced the air (oxygen) needed for breathing.


https://ilmoproducts.com/industries-served/welding-cutting/gases-their-applications/carbon-dioxide/


CO2 is already oxidized. Used in the extinguishing of fires because it is inert in the atmosphere and will not react with O2 while fighting fires since CO2 is already oxidized.  It works by displacing the oxygen.

Your assertion has no bases in why CO2 is used in fire extinguishers.  And has no mechanism to rob the reaction of black powered by combining with the KNO3 that under heat decomposes to produce O2 gas that sustains the reaction that causes black powered to burn with no atmospheric oxygen required.

There is a reason CO2 is used as a shielding gas in welding.

*

JackBlack

  • 26157
  • +51/-79
Re: Why?
« Reply #38 on: January 12, 2023, 01:32:47 PM »
This heretic needs to be taught of our rich culture.
Care to try addressing the argument, rather than just posting Zelda videos?

Yes, there are chemical causes to fire, but the treatment is 100% following the other three. Taking off a flaming chemical fire from heat source, tossing the chemical (a fuel) in the sink, and covering it to boot tames pretty much all forms of flame.
No, it doesn't.
Taking it off a heat source doesn't help when it is providing its own heat.

The chemical chain reaction part is why you can have a piece of wood sitting on the ground not burning, but by setting fire to it you can have it continue to burn.

The reason an oxidizer fire can't be snuffed by carbon dioxide is because it bonds with the oxygen. ( CO2 + O2 -> C + 2O2) not because having an oxidizer is a magical free pass.
You sure do love spouting delusional garbage.
CO2 is the product of combustion.
It isn't going to magically split to give you oxygen, just to burn to produce more carbon dioxide.
And the fact that CO2 can extinguish fires when they don't have an oxidiser other than air present further demonstrates your claim is delusional BS.

All the CO2 does is displace the atmospheric oxygen. If there is no other oxidiser it goes out.
If there is other oxidiser, it continues to burn.

A flame will not burn infinitely
No, it will just burn for as long as it has the necessary fuel and oxidiser.

so covering it (rather than feeding it carbon dioxide) will eventually exhaust it.
So will just letting it burn.
And the end product, for most fires, is the same. You either cover it with CO2 directly, or you cover it so the burning CO2 can't escape, and end up with a blanket of CO2 above it.
But again, if the mix has an oxidiser other than the air, then it will continue to burn until that or the fuel is depleted.

*

bulmabriefs144

  • 6256
  • +79/-78
  • Roco the Fox
Re: Why?
« Reply #39 on: January 13, 2023, 12:11:08 AM »
https://mixkit.imgix.net/videos/preview/mixkit-time-lapse-of-a-small-town-at-night-3132-0.jpg

There is a reason CO2 is used as a shielding gas in welding.

Neither carbon nor oxygen are noble. This means they bond readily due to gaps in their structure. This is why pure gold doesn't oxidize (what you'd call tarnish or rust), because it has to be altered to even form alloys (gold alloys do rust but 24k does not). It is a noble solid. There are noble gases and such too. Because they are not noble, this means they can bond with other molecules, creating a reaction. This reaction in turn can screw with what would ordinarily be a normal trait for that chemical.
If ρ=m/V, then B=ρsurfobj


Here's my Bible, if ya wanna read

*

JackBlack

  • 26157
  • +51/-79
Re: Why?
« Reply #40 on: January 13, 2023, 01:10:40 AM »
Neither carbon nor oxygen are noble. This means they bond readily due to gaps in their structure.
You sure love spouting garbage.
No element is truly noble. It reacting or not comes down to thermodynamics.  All those "gaps in their structure", by which I assume you are referring to the electron shells, means that they typically aren't found as atoms. e.g. we have gaseous oxygen which is O2. Carbon can be found as part of hydrocarbons, or as pure carbon in the form of graphite or diamond and so on, where it has bonds to other carbon atoms.

But for the reaction, if you have elemental carbon, and gaseous oxygen, they are in a relatively high energy state. They can easily lose energy (and give it off as heat) by combining to produce carbon dioxide.

Even gold can react. If you put it in aqua regia it will corrode very quickly.

Now again, you have failed to demonstrate what is missing, either from a triangle or tetrahedron, which would prevent rockets working in a vaccum.
You are yet to justify your delusional BS at all.

*

bulmabriefs144

  • 6256
  • +79/-78
  • Roco the Fox
Re: Why?
« Reply #41 on: January 13, 2023, 06:18:13 AM »
Neither carbon nor oxygen are noble. This means they bond readily due to gaps in their structure.
You sure love spouting garbage.
No element is truly noble. It reacting or not comes down to thermodynamics.  All those "gaps in their structure", by which I assume you are referring to the electron shells, means that they typically aren't found as atoms. e.g. we have gaseous oxygen which is O2. Carbon can be found as part of hydrocarbons, or as pure carbon in the form of graphite or diamond and so on, where it has bonds to other carbon atoms.

But for the reaction, if you have elemental carbon, and gaseous oxygen, they are in a relatively high energy state. They can easily lose energy (and give it off as heat) by combining to produce carbon dioxide.

Even gold can react. If you put it in aqua regia it will corrode very quickly.

Now again, you have failed to demonstrate what is missing, either from a triangle or tetrahedron, which would prevent rockets working in a vaccum.
You are yet to justify your delusional BS at all.

Gold can react when we put it in this solution that we have specially made through alchemy to help it break down in order that we might separate it from other materials. Yes I'm aware of metallurgy. I'm also aware that this not what I mean. Btw, aqua regia cannot be said to be a stable substance itself. It decomposed rapidly into a number of other products as certain compounds bubble out.

The stability of noble gases is related to electron configuration, typically a 2 or 8 (or 2 or 8 multiple) configuration). Under natural circumstances, circumstances that don't involve pulling electrons of a material, exposing it to a harsh acid, or bonding as an alloy at heat, the noble gas this keeps the material stable.
 Does the gold bond to aqua regia? No, I think just dissolves out. But even if it did, I think the noble metals might be so called for different reasons than the noble gases. Of major concern to alchemy was the ability of metals to rust. Noble gases on the other, the concern was to react at all.

It says AuCl4- is what it
bonds as. But obviously it doesn't stay this way, because it is possible through more chemistry to separate it back out into pure gold.



Now, when you're done making platitudes about how nothing is really noble, helium and xenon are non-flammable and non-reactive except in very rare (almost contrived) circumstances. And if it does react, it is quick to force any compound made back out (it naturally wants to stay single unless its electron profile is tampered with).

If ρ=m/V, then B=ρsurfobj


Here's my Bible, if ya wanna read

?

DataOverFlow2022

  • 8424
  • +49/-96
Re: Why?
« Reply #42 on: January 13, 2023, 07:22:11 AM »

The reason an oxidizer fire can't be snuffed by carbon dioxide is because it bonds with the oxygen. ( CO2 + O2 -> C + 2O2) not because having an oxidizer is a magical free pass.

Bullshit


When you burn carbon it oxidizes into CO2

Quote
https://flexbooks.ck12.org/cbook/ck-12-middle-school-physical-science-flexbook-2.0/section/5.22/primary/lesson/combustion-reactions-ms-ps/


A combustion reaction occurs when a substance reacts quickly with oxygen (O2). For example, in the Figure below, charcoal is combining with oxygen. Combustion is commonly called burning, and the substance that burns is usually referred to as fuel. The products of a complete combustion reaction include carbon dioxide (CO2) and water vapor (H2O). The reaction typically gives off heat and light as well. The general equation for a complete combustion reaction is:

Fuel + O2 → CO2 + H2O


There is lots more free oxygen than CO2 in the atmosphere,

Quote
Oxygen

O2   20.95%   209,500 ppm


Carbon Dioxide

CO2   
0.0397%

(Dec. 12, 2014 mean est.) 399 ppm


http://ossfoundation.us/projects/environment/global-warming/atmospheric-composition


With there being more oxygen in the atmosphere than CO2.  In your delusion where CO2 could readily react with atmospheric oxygen O2, there wouldn’t be any measurable CO2 in the atmosphere…


Anyway…
This is how involved it is to split carbon and oxygen after the carbon is oxidized into CO2 in a fire.

Quote
Using this catalyst, an electrochemical cell was developed that split carbon dioxide into carbon monoxide and oxygen.
https://science.osti.gov/bes/Highlights/2012/BES-2012-12-b


How is spraying already oxidized carbon (CO2) on a carbon oxidized fire that is burning like black powder going to split out the carbon from CO2 used as an extinguishing agent to produce oxygen which would totally defeat using CO2 as an extinguishing agent.


« Last Edit: January 13, 2023, 07:24:31 AM by DataOverFlow2022 »

*

JackBlack

  • 26157
  • +51/-79
Re: Why?
« Reply #43 on: January 13, 2023, 02:44:50 PM »
Gold can react when we put it in this solution that we have specially made through alchemy to help it break down in order that we might separate it from other materials. Yes I'm aware of metallurgy. I'm also aware that this not what I mean.
There you go running away from the point yet again.
The point is that the reactivity of a substance will depend upon what else is there.

Oxygen in elemental form is fairly unstable and will react as an oxidant to oxidise things. Carbon in various forms, in the presence of oxygen or another oxidiser, will react to produce carbon dioxide (or another compound depending upon what the oxidiser is).
But carbon dioxide is much more stable. It cannot be used as a fuel or an oxidant for more carbon.
It will not react with oxygen like you pretend it does to produce more oxygen.

But more importantly, you still refuse to explain just what is magically going to prevent rockets working in a vacuum to propel a craft (specifically what is missing from the fire triangle or fire tetrahedron), and why they should magically stop moving without air.

*

bulmabriefs144

  • 6256
  • +79/-78
  • Roco the Fox
Re: Why?
« Reply #44 on: January 13, 2023, 05:56:41 PM »

The reason an oxidizer fire can't be snuffed by carbon dioxide is because it bonds with the oxygen. (CO2 + O2 -> C + 2O2) not because having an oxidizer is a magical free pass.

Bullshit


When you burn carbon it oxidizes into CO2


Can I quote you on that? Because that's wrong.

Combustion combines air with carbon in order to make carbon dioxide.

https://www.thoughtco.com/combustion-reactions-604030
Quote
    Combustion of methane
    CH4 + 2 O2 → CO2 + 2 H2O

    Burning of naphthalene
    C10H8 + 12 O2 → 10 CO2 + 4 H2O

    Combustion of ethane
    2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

    Combustion of butane (commonly found in lighters)
    2C4H10 +13O2 → 8CO2 +10H2O

    Combustion of methanol (also known as wood alcohol)
    2CH3OH + 3O2 → 2CO2 + 4H2O

    Combustion of propane (used in gas grills, fireplaces, and some cookstoves)
    2C3H8 + 7O2 → 6CO2 + 8H2O

Unlike certain people in this forum, I was taught proper chemistry, among other things. As you can see, most of these release smoke and steam, so they don't rage out of control.

My chemistry teacher taught it like trading partners on the dance floor.



That is, you cannot have a chemical reaction where matter is created or destroyed. This means you can't do something like this in the absence of any air.   6C → 6 CO2

Matter cannot be created or destroyed.

Now, what I said before, the CO2 can break down into oxygen. If your reaction is with an oxidizer (let's say hydrogen peroxide), this is why it stays ignited despite the extinguisher.

6CO2 + 6 H2O2 → C6H1206 + 9 O2

That's a guess, it could bond in any number of ways, but in this model, you have carbon dioxide and the peroxide converting into sugar and air in heat. It does eventually burn out, as it can't stay lit. But this why CO2 doesn't work, because it trades chemicals, and the chemicals it trades to are flammable and have sufficient air.

If we're assume it turns into sugar, combustion of sugar is thusly if no more fuel is provided.

C6H1206 + 9 O2 → 6 CO2 + 6 H20 + heat (+ 3O2 that isn't in a normal sugar combustion reaction, so the oxygen makes it burn a bit longer or hotter)



Chemistry made simple with square dancing.
If ρ=m/V, then B=ρsurfobj


Here's my Bible, if ya wanna read

*

JackBlack

  • 26157
  • +51/-79
Re: Why?
« Reply #45 on: January 13, 2023, 10:31:23 PM »
Can I quote you on that? Because that's wrong.
Combustion combines air with carbon in order to make carbon dioxide.
Before you go declaring something wrong, make sure you understand the words used, and the context of it.

Carbon and OXYGEN (not air) react to produce CO2.
And if you want to play that game, then you are wrong that it is carbon. In your example, you have carbon containing compounds, not carbon.

But the important point remains, CO2 is the combustion product.

Unlike certain people in this forum, I was taught proper chemistry
So it isn't that you are wrong, it is that you are intentionally lying when you provide the crap you do?

That is, you cannot have a chemical reaction where matter is created or destroyed. This means you can't do something like this in the absence of any air.
Again, the fuel and oxisider are from the rocket. It doesn't need the air.
In the simplest case, they have a hydrogen tank and an oxygen tank.
The oxygen comes from that tank. They don't need the air.

Now, what I said before, the CO2 can break down into oxygen. If your reaction is with an oxidizer (let's say hydrogen peroxide), this is why it stays ignited despite the extinguisher.
So now you just try and deflect to more delusional BS.
That would by hydrogen peroxide breaking down.

The garbage you provided before was CO2 reacting with O2, to produce C and 2O2.
Notice how there was no H2O2 there?

And now you are just making up equations.
Do you have any reference at all for that equation being possible?

And if you understood chemistry you would realise how stupid your statement is.
If you react CO2 with an oxidiser, it would become more oxidised, not less.
What you need is a reductant, to reduce the CO2.
For example, if you react CO2 with C, you can get carbon monoxide produced.

But really, all you are saying now is if you have an oxidiser you can have combustion continue. Exactly what you objected to before.

And importantly, if you have an oxidiser, like hydrogen peroxide, you don't need the atmospheric oxygen for combustion.

?

DataOverFlow2022

  • 8424
  • +49/-96
Re: Why?
« Reply #46 on: January 14, 2023, 04:15:04 AM »

The reason an oxidizer fire can't be snuffed by carbon dioxide is because it bonds with the oxygen. (CO2 + O2 -> C + 2O2) not because having an oxidizer is a magical free pass.

Bullshit


When you burn carbon it oxidizes into CO2


Can I quote you on that? Because that's wrong.

Combustion combines air with carbon in order to make carbon dioxide.


As pointed out, air is mostly nitrogen.  When something burns, its reacting with the oxygen in the atmosphere.

Anyway.  Noticed you left out the charcoal example that I cited..

Quote
https://flexbooks.ck12.org/cbook/ck-12-middle-school-physical-science-flexbook-2.0/section/5.22/primary/lesson/combustion-reactions-ms-ps/


A combustion reaction occurs when a substance reacts quickly with oxygen (O2). For example, in the Figure below, charcoal is combining with oxygen. Combustion is commonly called burning, and the substance that burns is usually referred to as fuel. The products of a complete combustion reaction include carbon dioxide (CO2) and water vapor (H2O). The reaction typically gives off heat and light as well. The general equation for a complete combustion reaction is:

Fuel + O2 → CO2 + H2O



Why is charcoal important?

Charcoal is close to pure carbon..

You can burn a diamond if you want..

Quote
fact, Antoine Lavoisier first determined that diamond is made out of carbon by burning it and showing that the combustion product was carbon dioxide. The book Diamond Films and Coatings by Robert Foster Davis states, "In 1772 the French chemist Antoine L. Lavoisier found that the products of diamond combustion behaved as, and most assuredly were, solely carbon dioxide...

https://www.wtamu.edu/~cbaird/sq/mobile/2014/03/27/can-you-light-diamond-on-fire/


Pure carbon will burn in presence of enough oxygen like the oxygen supplied in our atmosphere to combine, oxidize, in the presence of heat to produce CO2

Back to the cited source that made you look stupid, and you keep doubling down on stupid.  Or you’re just right out trolling and lying at this point.


Quote
https://ehs.unl.edu/sop/s-oxidizers_chem_haz_risk_min.pdf

Safe Operating Procedure


OXIDIZERS CHEMICAL HAZARDS & RISK MINIMIZATION

Extinguishing Agents for Oxidizer Fires
Extinguishing fires involving an oxidizer is difficult. A carbon dioxide extinguisher is not an effective choice for an oxidizer-fed fire because it works on the principle of excluding atmospheric oxygen, and atmospheric oxygen is not required for an oxidizer-fed fire. Dry chemical extinguishing agents will also be ineffective for the most part. They act to interrupt the chemical chain reaction, but will be overcome by the oxidizer in all but the smallest fires.
Water may be the only extinguishing agent that may be effective. Energy/heat generated during combustion must first drive off the water as steam and then reheat the surface of material to a sufficient temperature to support ignition. Some combustible materials (e.g., wood) can retain a lot of heat energy once they are hot. Adding water until the fire is out may not end the potential for fire. Instead, the combustible material may have the energy to drive off the water and still have enough residual heat to re-ignite. Camp fires re-igniting after being extinguished with water are an example of this. Therefore, water must be used in drenching quantities.
Water can also result in the fire spreading if it involves a non-miscible flammable liquid. In this situation evacuation and isolation of the fire may be the only option.
If the fire involves an oxidizing gas, then the gas supply should be shut-off (if it can be done so safely). This is the reason hospitals have remote oxygen shutoffs in hallways outside of rooms where the gas is used.



Anyway…. “A carbon dioxide extinguisher is not an effective choice for an oxidizer-fed fire because it works on the principle of excluding atmospheric oxygen, and atmospheric oxygen is not required for an oxidizer-fed fire.”

Right from the safe operations procedure.  Probably written by a chemical engineer.  With engineer seeming to be your new standard.

Meaning CO2, works on the principle of excluding atmospheric oxygen, and atmospheric oxygen is not required for an oxidizer-fed fire.


Nothing about CO2 reacting.

In fact. Let’s look at a safety data sheet for CO2.


Quote






Added



https://www.airgas.com/msds/001013.pdf


CO2 is not listed as an oxidizer with no evidence of being an oxidizer.

And.  By the data sheet under flash point, Product does not sustain combustion.

« Last Edit: January 14, 2023, 04:50:30 AM by DataOverFlow2022 »

*

bulmabriefs144

  • 6256
  • +79/-78
  • Roco the Fox
Re: Why?
« Reply #47 on: January 14, 2023, 06:31:28 AM »
Can I quote you on that? Because that's wrong.
Combustion combines air with carbon in order to make carbon dioxide.
Before you go declaring something wrong, make sure you understand the words used, and the context of it.

Carbon and OXYGEN (not air) react to produce CO2.
And if you want to play that game, then you are wrong that it is carbon. In your example, you have carbon containing compounds, not carbon.

But the important point remains, CO2 is the combustion product.


When I say air, I mean O2. Even though real air also has other compounds in it (nitrogen and phosphorus and trace materials), for the purposes of discussion, O2 is air to distinguish oxygen from just O or O3 or whatever a random oxidizer has in it.

A lump of charcoal or a diamond is usually just C as a repeating unit. The formula here matters less than the chain configuration (I decided to drop out of organic chemistry, even though I aced the first test, as I got a sinking feeling about carbon chains; I think I got my money back). Burning pure charcoal is literally just C bonding with AIR (O2). You need AIR for combustion reactions to take place. You can't burn carbon in a vacuum and expect results.

(I suppose you can use ozone too, or what is in oxidizers, but they don't necessarily combine as you'd like)

Also most of those combustion formulas also had water as the secondary production.

    Combustion of methane
    CH4 + 2 O2 → CO2 + 2 H2O

    Burning of naphthalene
    C10H8 + 12 O2 → 10 CO2 + 4 H2O

    Combustion of ethane
    2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

    Combustion of butane (commonly found in lighters)
    2C4H10 +13O2 → 8CO2 +10H2O

    Combustion of methanol (also known as wood alcohol)
    2CH3OH + 3O2 → 2CO2 + 4H2O

    Combustion of propane (used in gas grills, fireplaces, and some cookstoves)
    2C3H8 + 7O2 → 6CO2 + 8H2O

See?

Now dance with me. Dance the chemistry dance.



You can dance if you want to, you can mix those chemicals around...

Quote
CO2 is not listed as an oxidizer with no evidence of being an oxidizer.

This is because it typically combines with compounts in a way that snuffs the flames. But certain chemicals (mostly oxidizers) will cause a carbon breakdown reaction. The CO2 doesn't work because it bonds with the oxidizer, we are left with carbon and oxygen, but extra oxygen in the equation that cycles for alot longer than it should. In other words, the equation can't balance itself, so it keeps burning until heat is exhausted, the flame is snuffed by non-chemical means, or new chemicals (like hydrogen) are introduced, and the excess oxygen bonds with those.
« Last Edit: January 14, 2023, 07:01:42 AM by bulmabriefs144 »
If ρ=m/V, then B=ρsurfobj


Here's my Bible, if ya wanna read

?

DataOverFlow2022

  • 8424
  • +49/-96
Re: Why?
« Reply #48 on: January 14, 2023, 06:58:09 AM »
quote author=DataOverFlow2022 link=topic=91324.msg2391423#msg2391423 date=1673623331]

The reason an oxidizer fire can't be snuffed by carbon dioxide is because it bonds with the oxygen. ( CO2 + O2 -> C + 2O2) not because having an oxidizer is a magical free pass.

Your statement is still butshit. 

And the only thing you have proven in spades is you’re a TROLL. 

?

DataOverFlow2022

  • 8424
  • +49/-96
Re: Why?
« Reply #49 on: January 14, 2023, 06:59:21 AM »


Except you been proven wrong twice…





« Last Edit: January 14, 2023, 11:48:22 AM by DataOverFlow2022 »

*

JackBlack

  • 26157
  • +51/-79
Re: Why?
« Reply #50 on: January 14, 2023, 01:47:02 PM »
When I say air, I mean O2.
Yet you don't make the same allowances for others, and are doing it to try to hide from reality.

Most rockets  these days use oxygen.
This means they don't need air, because they have the oxygen they need.

Burning pure charcoal is literally just C bonding with AIR (O2). You need AIR for combustion reactions to take place. You can't burn carbon in a vacuum and expect results.
This is why your above claim is incredibly dishonest.
You don't mean oxygen, you mean air.
If you actually mean oxygen you would not have followed it up with this garbage.

If you have oxygen being provided from a tank, piped into the reaction chamber you don't need AIR, as you already have the oxygen that you need.
That means you can burn carbon in a vacuum (with oxygen, or a different oxidiser) and expect results.

But certain chemicals (mostly oxidizers) will cause a carbon breakdown reaction.
i.e. they don't need oxygen from the air to react.
i.e. having an oxidiser means you do not need to burn in it in the atmosphere, and that it can burn in a vacuum.

In other words, the equation can't balance itself, so it keeps burning until heat is exhausted, the flame is snuffed by non-chemical means, or new chemicals (like hydrogen) are introduced, and the excess oxygen bonds with those.
Or the fuel is consumed. If your equation isn't balanced, you have failed basic chem.

Now stop with the dishonest BS.

*

bulmabriefs144

  • 6256
  • +79/-78
  • Roco the Fox
Re: Why?
« Reply #51 on: January 15, 2023, 10:30:29 PM »
quote author=DataOverFlow2022 link=topic=91324.msg2391423#msg2391423 date=1673623331]

The reason an oxidizer fire can't be snuffed by carbon dioxide is because it bonds with the oxygen. ( CO2 + O2 -> C + 2O2) not because having an oxidizer is a magical free pass.

Your statement is still butshit. 

And the only thing you have proven in spades is you’re a TROLL.

If you think you aren't in turn trolling me right back with willfully dense arguments, I think you'd better examine better.

And that was a mistake. Pure O2 doesn't necessarily bond with CO2 but some oxidizers might, as I pointed out with how hydrogen peroxide could turn into sugar.
If ρ=m/V, then B=ρsurfobj


Here's my Bible, if ya wanna read

*

JackBlack

  • 26157
  • +51/-79
Re: Why?
« Reply #52 on: January 15, 2023, 11:00:36 PM »
Pure O2 doesn't necessarily bond with CO2 but some oxidizers might
And such oxidisers are able to directly react with the fuel, i.e. no atmosphere needed.

*

bulmabriefs144

  • 6256
  • +79/-78
  • Roco the Fox
Re: Why?
« Reply #53 on: January 16, 2023, 06:11:30 AM »
For a few seconds. Then they smoke themselves out and the heat is transferred to the glass or whatever.

You are describing a perpetual energy reaction otherwise. I think we've discussed why perpetual motion and perpetual energy are wrong. Without constantly feeding more oxygen in, the rocket will not continue to burn in an airless environment.
« Last Edit: January 16, 2023, 06:14:19 AM by bulmabriefs144 »
If ρ=m/V, then B=ρsurfobj


Here's my Bible, if ya wanna read

*

NotSoSkeptical

  • 8820
  • +52/-54
  • Bestest Buddy of "wise"
Re: Why?
« Reply #54 on: January 16, 2023, 06:57:25 AM »
For a few seconds. Then they smoke themselves out and the heat is transferred to the glass or whatever.

You are describing a perpetual energy reaction otherwise. I think we've discussed why perpetual motion and perpetual energy are wrong. Without constantly feeding more oxygen in, the rocket will not continue to burn in an airless environment.

Perpetual energy reaction?

Once the oxidizer is consumed it isn't reused.  There are corresponding amounts of fuel and oxidizer in a rocket motor.  For each unit of fuel, X amount of oxidizer is used/required.  And for solid rockets, the fuel and oxidizer are mixed together in what makes the solid rocket fuel.

Another thing to add to the list of things bulmabriefs doesn't understand:  Fuel Consumption
« Last Edit: January 16, 2023, 07:00:17 AM by NotSoSkeptical »
If "deserving" time was a factor for responding on these forums, then no one would be here posting.

*

bulmabriefs144

  • 6256
  • +79/-78
  • Roco the Fox
Re: Why?
« Reply #55 on: January 16, 2023, 09:18:08 AM »
Ah good, so you admit that this tiny rocket didn't even burn a full second in a vacuum. That energy expends itself to do tasks, and you can't run a car on positive vibes.



Maybe some day you will actually understand why flying a device through space through Mars and beyond simple isn't possible, and particularly not possible when we demystify all the science fantasy bullshit and actually look at our current technology.
If ρ=m/V, then B=ρsurfobj


Here's my Bible, if ya wanna read

*

NotSoSkeptical

  • 8820
  • +52/-54
  • Bestest Buddy of "wise"
Re: Why?
« Reply #56 on: January 16, 2023, 11:30:02 AM »
Ah good, so you admit that this tiny rocket didn't even burn a full second in a vacuum. That energy expends itself to do tasks, and you can't run a car on positive vibes.



Maybe some day you will actually understand why flying a device through space through Mars and beyond simple isn't possible, and particularly not possible when we demystify all the science fantasy bullshit and actually look at our current technology.

Not what I said.
If "deserving" time was a factor for responding on these forums, then no one would be here posting.

*

JackBlack

  • 26157
  • +51/-79
Re: Why?
« Reply #57 on: January 16, 2023, 12:05:45 PM »
For a few seconds. Then they smoke themselves out
No, until the oxidiser is depeted.

You are describing a perpetual energy reaction otherwise.
No, we aren't.
For the simple reaction:
C + O2 -> CO2

This can continue until C or O2 is depleted.
If they are both there, the carbon can continue to react with that O2.
But once either all the O2 or all the C is used up, it can't react any more (not without something else coming in).

The same would apply for any other combination of fuel and oxidiser.

There is nothing perpetual about that.
And there is nothing special about the oxidiser in that regard.

Without constantly feeding more oxygen in, the rocket will not continue to burn in an airless environment.
Such as from the oxygen tank on the craft that will continually feed in oxygen while the engine is on?
If it is a solid fuel matrix with oxidiser incorporated into the matrix, then there is enough there to burn all the fuel without needing to bring in any more air.

I'm yet to hear of a rocket which gets its oxygen from the air.

Ah good, so you admit that this tiny rocket didn't even burn a full second in a vacuum.
There is no need to invoke a vacuum here.
This rocket is designed to burn for no more than a few seconds.
And that is what it did.
But it certainly appears to burn for more than 1 second.

Maybe some day you will actually understand why flying a device through space through Mars and beyond simple isn't possible
You don't really mean understand. We understand your BS claims quite well. What you mean is accept.

How can we accept that when so far you are yet to explain why and instead just continually assert pure BS to reject reality?
Have you considered it the other way around? Perhaps one day you will get over your aversion to reality and start accepting the fact that rockets can go to Mars, without needing a magical atmospheric track inside it.

You are yet to provide any justification (which can withstand even mild scrutiny) as to why it is impossible.
You have done nothing to refute the evidence that rockets can ignite, burn and provide thrust in a vacuum.

And have even admitted that without air there is nothing to stop it.

So why would we "accept" your delusional BS when all the available evidence shows you are wrong, and you are yet to provide anything to demonstrate you are right?

*

Stash

  • Ethical Stash
  • 13398
  • +2/-2
  • I am car!
Re: Why?
« Reply #58 on: January 16, 2023, 12:17:41 PM »
For a few seconds. Then they smoke themselves out and the heat is transferred to the glass or whatever.

Here is a Blue Origin flight. MECO (Main Engine Cut Off) happened at about 191,000 ft.



At 100', oxygen in the atmosphere is 100%


At 10,000', oxygen in the atmosphere is about 70%


At 100,000', oxygen in the atmosphere is about 1%


At 110,000', oxygen in the atmosphere is about 0%


The Blue Origin rocket kept burning for another 80,000' or so.





*

bulmabriefs144

  • 6256
  • +79/-78
  • Roco the Fox
Re: Why?
« Reply #59 on: January 17, 2023, 05:58:52 AM »
Ah good, so you admit that this tiny rocket didn't even burn a full second in a vacuum. That energy expends itself to do tasks, and you can't run a car on positive vibes.



Maybe some day you will actually understand why flying a device through space through Mars and beyond simple isn't possible, and particularly not possible when we demystify all the science fantasy bullshit and actually look at our current technology.

Not what I said.

The Rock says,


The words that you say have certain nested assumptions.

You admit that fuel consumption is a thing, you also admit that when this tiny rocket snuffs itself in a half second, it is using all the fuel and oxidizer it has access to.

You say that the oxidizer container is much bigger and should last longer. That might be true, if it were efficient. But rockets are NOT efficient. They spew out a thick jet of flame, wasting all of their fuel thrusters supposedly just getting into space. Instead of taking the big thrusters with them, we are left with a tiny shuttle that is supposed to last months. In case you didn't realize, there are no refuel stations in space. What, you think space stations are able to produce oxygen and share it with incoming shuttles? Not unless they want to exhaust their own supply and suffocate. Nor would ethics allow harvesting it from another planet (not to mention there's no oxygen-rich worlds between here and Mars, and an asteroid field in the way that nobody mentions on these trips). So if it takes 8 months to get to Mars and weight limit means you can't take off unless you carry significantly less oxidizer than you need to last eight months, uhhh Houston we have a problem.
If ρ=m/V, then B=ρsurfobj


Here's my Bible, if ya wanna read