And that means the added effect of all these molecules hitting the wall will be tremendous. And that's exactly why I can't push this ball any further than, say this, right? So whenever we talk about force of molecules, force of gas molecules, we really want to talk about the pressure. And so when we talk about things like vapor pressure of a gas, vapor pressure is exactly this. It's the force that these molecules exert on the walls of the container at equilibrium that's vapor pressure. So let's jump into number or part D.
So gas molecules expand into container.