00:01
All right, so we want to know which of these processes increases the average kinetic energy of the molecules and a gas.
00:07
And it'll help to write out the ideal gas law, first off, and note that the average kinetic energy, we'll call this like, you know, delta k, is going to be like three halves times nrt, the total average kinetic energy of the gas.
00:25
So notice it depends on the temperature.
00:26
This is basically, you know, another way of writing.
00:29
This is three halves pv.
00:32
So when we look at these choices, we can see decreasing the pressure, keeping v and n constant.
00:38
Well, that's only going to decrease the energy.
00:41
Another way you can write this is like, you know, in terms of the number of molecules, and it's boltzman's constant times the number of molecules.
00:51
So this can't be the correct choice.
00:53
Next time, we have decreasing the volume keeping p and t constant.
00:56
Once again, decreasing the volume is going to decrease...