All Questions
5
questions
5
votes
2
answers
289
views
Helium in Uranus atmosphere
I read that in 1986 Voyager 2 measured the composition of Uranus' atmosphere, which turned out to be composed of $85 \%$ hydrogen and $15 \%$ helium.
It's not clear to me how this relevant amount of ...
- 566
2
votes
1
answer
94
views
How long does it take for gas to settle down under earth's gravity?
I was discussing about ideal gas with my colleague the other day, and these questions come up in our conversation.
Lets say we have 1 mole ideal gas in a perfectly insulating cube box of size $1m^3$,...
- 170
1
vote
2
answers
484
views
How does gravitational potential energy pertain to a single gas particle escaping the atmosphere?
What's the effective difference between a helium molecule moving at 11.18 km/s and one moving at 11.2 km/s at the edge of the atmosphere? Is the idea that, with a particle moving just below the ...
- 31
-1
votes
2
answers
258
views
Weight of a container of gas and container shape [duplicate]
Consider a cube shaped container with one mole of gas inside.
Acceleration due to gravity would give the difference in force between the top of the container and the bottom to be mg, with net force ...
- 23
6
votes
3
answers
6k
views
Does gas spread out equally everywhere?
An excerpt from this page:
Gases can fill a container of any size or shape. It doesn't even matter how big the container is. The molecules still spread out to fill the whole space equally. That is ...
- 1,531