Avogadro's Law

Definition

Avogadro's Law states that equal volumes of all gases, at the same temperature and pressure, contain an equal number of molecules.

Related terms

Molar Volume: The volume occupied by one mole of any gas at standard temperature and pressure (STP).

Ideal Gas Law: A law stating that the pressure exerted by a gas is directly proportional to its absolute temperature and volume and inversely proportional to its amount in moles.

Gas Constant (R): The constant in the ideal gas law with a value approximately equal to 8.31 J/(mol·K).