• Values on opposite sides of the equation are directly proportional to one
another when the other variables are held constant.More About Gases: Partial Pressures
If you have a container filled with more than one gas, each gas exerts a pressure.
The pressure of any one gas within the container is called its partial pressure,
and all of the partial pressures add up to create the total pressure inside the
container.
Partial Pressures• 1 mole of gas at STP occupies 22.4 LWhen the test writers tell you about a container that has different gases in it, they
might ask you to figure out the partial pressure for one of them. Let’s say there
are 100 moles of gas in a container: 20 moles of oxygen, 30 moles of hydrogen,
and 50 moles of nitrogen. Oxygen makes up 20% of the gas, which means that it