By rearranging the ideal gas law, we can derive new equations connected to pressure, volume, moles, and temperature. We're going to say these derivations are required when we have variables with two sets of different values. So basically, we'll be dealing with a question where the ideal gas law is in play.
And within the question, they may give you 2 pressures and two temperatures or two volumes with two moles. That's when we have to do one of these types of derivations. Just remember we're still utilizing the ideal gas law. We're just changing it a bit when we're dealing with two pressures or two volumes, 2 moles or two temperatures within any given question.
Now that we've seen this, let's go on to our example question in the next video.