00:01
In part a, we have moles as 1 .50.
00:07
We know the pressure is 0 .985 atm, and our temperature is negative 6 degrees celsius.
00:19
So we'll add 273 to get to kelvin, so 267 kelvin.
00:24
And then we're looking for volume.
00:27
So volume is going to be n -r -t over p from our ideal gas law.
00:34
Now we'll just plug in what we know.
00:36
R is 0 .0821 when we use these units.
00:42
267 and .985.
00:49
So that will give us a volume of 33 .4 liters.
00:57
In part b, we have 3 .33 times 10 of the minus 3 moles.
01:04
That's our n.
01:05
Our volume is 325 milliliters, which is divided by 1 ,000 .325 liters.
01:16
And our pressure is given to us in tor.
01:23
So i'm going to go ahead and change tor to atm at 1 over 760.
01:32
So that gives us 0 .987 atmospheres.
01:38
And now we're looking for temperature.
01:40
So rearranging our ideal gas flow.
01:42
We've got pv over nr.
01:48
And by writing out all of our values, we can just go ahead and plug them in now.
01:54
Always good to keep track of your values before you start working out your equation.
02:03
And again, r is 0 .0821...