You get to the dive site, put on your gear, and are ready to go under. You check your scuba tank. It is filled to a pressure of about 22,000 kPa (kilopascals) at a temperature of 300 K. The volume of the tank is 25 L. You begin to wonder: If temperature remains constant, what would happen to the volume of gas in the tank if its pressure increased?

A. List and briefly describe the four thermal processes where pressure, volume, temperature, and heat are each held constant.