00:01
In this question, we have a 20 -liter cylinder filled with 0 .683 moles of gas at 325 kelvin, and we're asked to find the pressure.
00:10
So we're going to use the ideal gas law to solve this problem.
00:13
That is p times v equals n rt.
00:18
P is pressure, v is volume, n is moles, r is a constant, and t is temperature.
00:23
So we want to make sure all of our units are correct here.
00:26
The units come from the value of r, and we're going to use, uh, an r with a unit of liter atmosphere over mole kelvin.
00:36
So our volume needs to be in liters, which it is, and needs to be in moles, which it is, temperature needs to be in kelvin, which it already is, and then we're going to get our pressure in atmospheres.
00:47
So we're just going to plug our values into this equation and solve for the pressure...