And that's where our assumptions from our kinetic theory came. Let's look at Part D.
So earlier I said that for any given temperature and pressure, as long as they are held constant at that same temperature and pressure, our constant will always be the same. So suppose that's our case. Suppose I have a system under which I have constant temperature and pressure. Now, suppose I have a balloon at some volume one and some volume two. And suppose I have three molecules or three moles on my gas inside my balloon.