The volume of a fixed mass of a gas varies inversely as the pressure on it provided the temperature is constant. This statement is
Answer Details
The statement "The volume of a fixed mass of a gas varies inversely as the pressure on it provided the temperature is constant" is describing Boyle's law.
Boyle's law states that the volume of a fixed amount of gas at a constant temperature is inversely proportional to the pressure on it. In other words, if the pressure on a gas increases, its volume will decrease, and vice versa.
So, the statement is Boyle's law.