Physics and Anesthesiology: Kinetic Theory of Gases
Ideal Gas Law
The ideal gas law can be written PV = nRT where in this case n is the number of moles in this case and also note that PV = NkT where N is the number of atoms in that case.
Above interactive illustration of PV= NRT is courtesy of Dr. Michael Fowler of the University of Virginia.
Note the effects on Pressure and Temperature as the Volume is changed as you control piston movement