In Avogadro's Law, what does 'n' stand for?

In Avogadro's Law, 'n' represents the number of moles of a substance. Avogadro's Law states that equal volumes of gas, at the same temperature and pressure, contain an equal number of particles (which can be molecules, atoms, or ions). The law is typically expressed with the equation V/n = k, where V is the volume of the gas, n is the number of moles, and k is a constant that is specific to the temperature and pressure conditions.

Understanding 'n' as the number of moles is crucial because it provides a bridge between the macroscopic observations of gas volume and the microscopic counting of particles. Moles allow chemists to quantify gases in a way that relates to their reactivity, stoichiometry, and properties. In this context, representing the quantity of a substance in moles enables the application of the ideal gas law and other related calculations involving gases.