Final answer:
The subject of this question is Gas laws. Gas laws describe the behavior of gases under different conditions of temperature, pressure, and volume. The ideal gas law is one of the fundamental gas laws.
Step-by-step explanation:
The subject of this question is Gas laws. Gas laws describe the behavior of gases under different conditions of temperature, pressure, and volume. The ideal gas law, which is used to calculate properties of gases, is one of the fundamental gas laws.