Avogadro's Law relates volume to which parameter?

Avogadro's Law establishes a direct relationship between the volume of a gas and the number of moles of that gas, under the assumption that the temperature and pressure remain constant. This principle states that equal volumes of gases, at the same temperature and pressure, contain an equal number of molecules, or moles, regardless of the type of gas.

When considering a gas sample, as you increase the number of moles of the gas (for example, by adding more gas), the volume will also increase if temperature and pressure are held constant. This underlines the law's emphasis on the number of moles as the crucial parameter related to volume. The focus on moles differentiates Avogadro's Law from other gas laws that may involve factors like pressure or temperature. Thus, understanding Avogadro’s Law is essential for grasping the concept of gas behavior in chemistry.