00:02
Hi there.
00:03
In this question, we are using the ideal gas law, pv equals nrt, and some data to allow us to calculate the universal gas constant r.
00:15
All right.
00:16
So the first thing they want us to do is rearrange this equation to solve for r.
00:19
That means we need to dissolve, divide the right side by nt.
00:23
And if we divide the right side by nt, we need to also divide the left side.
00:27
Therefore, n and t cancel leaving r by itself.
00:31
R is equal to p.
00:33
Times v, so that is pressure times volume over n, which is number of moles, times t, which is the temperature in kelvin.
00:44
Okay, and we are given values here for pressure, volume, number of moles, and temperature.
00:49
Let's go ahead and plug those in and solve for a value for r.
00:53
The pressure, we are told, is 2 .75 atmospheres...