00:01
Hi there, this question is part of a larger question and in the original larger question we were given the starting information.
00:09
We're told that we have a container of gas.
00:12
It's an ideal gas and its pressure is one atmosphere.
00:17
That is at 20 degrees celsius and it has a volume of 1 .00 liters.
00:31
So in this question we want to determine the pressure if the temperature is constant but we change the piston so the container is now 1 .40 liters.
00:43
Alright, so the amount of gas is not changing because it's in that sealed piston and we're told the temperature is not changing either.
00:51
So the number of moles of the gas and the temperature are constant while the pressure and volume change.
00:59
So this relationship is described by boyle's law.
01:04
Boyle's law tells us that when the number of moles and the temperature are constant, the pressure of the gas and its volume are indirectly or inversely proportional.
01:24
What that means is as one goes up the other goes down and vice versa.
01:30
Okay, so boyle's law has the equation p1 times v1 equals p2 times v2.
01:39
This shows that indirect or inverse relationship...