Which gas law relates pressure and volume to the number of moles and temperature?

The Ideal Gas Law is a fundamental equation in chemistry that describes the relationships between pressure, volume, temperature, and the number of moles of a gas. It combines several individual gas laws into a single comprehensive equation, expressed as PV = nRT.

In this equation:

• P represents the pressure of the gas,

• V is the volume of the gas,

• n is the number of moles,

• R is the universal gas constant,

• T is the temperature measured in Kelvin.

The Ideal Gas Law shows how these parameters interact; for instance, if the temperature increases while the number of moles and pressure remain constant, the volume must increase. This relationship is crucial for understanding gas behavior under various conditions.

Other selections focus on specific relationships: Charles' Law examines the relationship between volume and temperature at constant pressure, Boyle's Law focuses on the relationship between pressure and volume at constant temperature, and Avogadro's Law addresses the relationship between volume and the number of moles at constant temperature and pressure. However, none of these encompass all four variables simultaneously as the Ideal Gas Law does. Hence, the Ideal Gas Law is the correct answer.