00:02
Hi there.
00:03
In this question, we are told that the number of moles of gas and the pressure of this gas sample are constant, while the temperature and volume are changing.
00:18
So this relationship is described by charles law.
00:22
Charles law is a gas law that says for a gas sample that has a constant number of moles and pressure, the volume and the absolute or kelvin temperature are going to be directly.
00:36
Proportional.
00:42
What that means is as one goes up, the other goes up, as one goes down, the other goes down.
00:48
They're directly proportional.
00:50
So the equation that we use to describe charles law says v1 over t1 equals v2 over t2.
01:01
All right.
01:03
So let's look at what we're given in the problem.
01:05
We are given an initial volume that is 3 .8 liters.
01:11
So in this equation, vs are volume.
01:13
T is kelvin temperature.
01:16
The ones are the initial conditions and the two are the new conditions.
01:20
So we're starting out at a temperature of 37 degrees celsius.
01:26
But in order to use any gas law equation, temperature has to be in kelvin...