What does Avogadro's Law state about the volume of gas?

Avogadro's Law states that, at constant temperature and pressure, the volume of a gas is directly proportional to the number of moles of gas present. This relationship can be expressed mathematically as V ∝ n, where V is the volume and n is the number of moles. This principle implies that if you increase the number of moles of gas, the volume will increase provided that temperature and pressure remain constant.

The rationale behind this law lies in the nature of gases, which consist of particles that occupy a larger space as their quantity increases. For instance, if you were to double the number of gas molecules while keeping the temperature and pressure unchanged, the volume would also double accordingly. This fundamental understanding of gas behavior is crucial in chemistry and has practical applications in various fields, including engineering and environmental science.