If the oxygen is more agitated, then that means it's hotter, the balloon would expand, and it would be less dense. As I stated, the two balloons are the same temperature.
Temperature differences would act on the balloons but both balloons would equally be in that temperature from the start, so that's negligible.
The issue is about the density of air that is trapped in that balloon, plus the balloon itself, against the lesser resistance of air under it. Helium is more expanded molecules and much lighter and larger than the denser air molecules, which contain many other elements that makes it more compact.
Or...
OR, the mass of helium is much smaller than that of the main constituents of air, and as such a balloon of this will float on the ocean of air molecules it is submerged in - so up it goes.
YES - oxygen and nitrogen are more dense than Helium. However, do you even grasp what you are talking about when you say that? All it means is that the
mass per unit volume for oxygen and nitrogen is higher than that for helium - and this is purely because they are heavier than helium, it isn't to do with how 'compact' they are.
In the gas phase at atmospheric pressure (and 0 °C), if you take 1 litre of ANY of the three gases - each will contain about the SAME NUMBER OF MOLES of molecules (about 0.0446 moles = about 26858120000000000000000 molecules). Oxygen, Nitrogen and Helium - 1 litre of each will contain about that many molecules of each element. If you put the gases under pressure or elevated temperature, then there would still be about the same number of atoms per litre for the 3 of them (just a proportionally greater number for each).
SO Scepti, in your balloon of air, versus your balloon of Helium - your air balloon basically has about the same number of molecules in it as your Helium balloon. The increased pressure within the balloon simply means the number of atoms per litre will increase for each gas, but the relative number of molecules in each balloon will be about the same.
Now what, Scepti? Your air balloon is actually just as compact as your helium balloon - the helium balloon is simply less dense because helium is a lighter element than nitrogen or oxygen. About the same number of atoms exist per cubic centimeter in a He balloon as there does in an air balloon - the elements of air are simply heavier, thus the density (i.e the
mass per unit volume) is greater - so the weight of the rubber balloon is enough to take it back down to earth under gravity - as where despite the rubber balloon, the He balloon will rise.
The oxygen is the same temperature as the helium, and it's denser than the helium, and the surface area for the atmosphere to push down on for each balloon is the same, which means your atmospheric force pushing down on each balloon is the same. So why would the Oxygen balloon be 'heavier'?
There is no PUSHING DOWN as such. It's more to do with resistance of each molecule in the stacking sandwich from the ground to the dome.
It's hard to explain to someone who is not willing to understand it and who is simply just hell bent on caring more about trying to keep a lie alive than to actually question it all.
That's why he is giving you the example of the gases in a balloon. The helium atoms are not coming into contact with any air molecules of air so they can't even enter the sandwich. Helium is simply lighter than air, in fact, it is so light that it will even float the balloon containing the gas.
You talk about 'not willing to understand' - how can you possibly throw that at someone else when all you do is sit there and make up theories with no evidence to back it up? You probably won't even understand the math-work above and just declare it is all bullshit.
Helium is a monatomic gas (He) with a mass of 4 g/mol and a density of 0.1786 g/L (at STP).
Nitrogen is diatomic (N
2) and has a mass of 28 g/mol and a density of 1.251 g/L.
Oxygen is diatomic (O
2) and has a mass of 32 g/mol and a density of 1.429 g/L g/L.
I'll walk you through it: Divide the densities of each gas by their molar masses. I think you'll find that comes to about 0.0446 moles for each gas. Multiply this by avogadros number to see the number of molecules - 26858120000000000000000. I only did this because I'm guessing you don't understand the concept of a mole (other than the subterranean dwelling mammal) - that's not an insult towards you, but you wouldn't know unless you have studied any chemistry (going out on a limb here and saying no you haven't). So, having a figure for the number of molecules is easier for the explanation.
I have a feeling I've wasted my time, but hey-ho, maybe - just maybe - you will concede.
For any viewers looking in. This is where mainstream science tries to dupe you into accepting gravity, by differentiating weight and mass, when in truth, mass and weight are the same thing, essentially and it's just the density of matter that makes up the mass.
Weight is just the measurement of any mass. This is where science likes to confuse people and baffle the mind, just like they do with much of unprovable science.
The values for somethings mass and weight are equivalent at gravitational acceleration. They are not the same thing, we measure mass at our gravitational constant because it is obviously convenient for us to do so.
However, we can create weightless environments right here, within the atmosphere (or 'dome' as you would prefer) in so-called 'vomit-comets'. You know this - regardless of your belief about space or the shape of the earth, these 0G environments can be created, an environment where the net force acting upon you is zero and so you are effectively weightless. However, you still have a mass. Matter always has a mass.
It's the same deal if you weigh something underwater or on land. Due to the buoyancy of water an object will weigh less in water than it does on land. You can deny this all you want, it's just a simple fact that is true once again regardless of your beliefs about the earth's shape or space. However, the object retains the same mass on land or in water, it just weighs differently depending if it is in water or on land.