00:01
So in this problem, we want to find what fraction of the volume is xenon atoms and what fraction is empty space.
00:09
And so the first thing we want to do is find the number of moles of xenon, and then we can find the number of molecules of xenon.
00:17
And so our pressure here is 1 .0 atmospheres.
00:22
We're using the ideal gas law.
00:25
Our volume is 100 milliliters, so we'll divide that by 1 ,000 to get our volume in low.
00:31
Liters, 0 .1010 liters.
00:34
Our r value is 0 .082 -057 liter atmospheres per mole kelvin.
00:46
And our temperature is 300 kelvin.
00:57
And n is what we're looking for.
01:00
So we can rearrange this equation to solve for n.
01:04
N equals pv over rt.
01:09
And then we get that we have 0 .0 .0 .0.
01:15
446 moles of xenon...