What does Boyle's Law state regarding gas?

Boyle's Law specifically states that the volume of a gas is inversely proportional to its pressure, assuming the temperature remains constant. This means that if the pressure on a gas increases, the volume will decrease, and vice versa, provided that the temperature does not change. This relationship highlights the fundamental behavior of gases under varying pressures within a closed system.

In this context, the correct choice accurately reflects the definition of Boyle's Law, indicating that as pressure changes, the volume responds accordingly while keeping the temperature constant. Understanding this law is crucial for refrigeration engineers, as it greatly influences the design and operation of refrigeration systems. Managing pressure and volume effectively is key to maintaining efficient system performance, impacting everything from energy consumption to cooling efficiency.

Other options do not align with Boyle's Law. The idea that the volume of gas remains constant does not describe any gas behavior as pressure changes. Similarly, the statement about the temperature of a gas remaining constant does not address the relationship between pressure and volume as detailed in Boyle's Law. Finally, the statement that the density of gas increases with pressure, while true in a general sense, does not encapsulate Boyle's Law, which specifically focuses on volume and pressure dynamics.