Avogadro's law

physical law about gas volume

Avogadro's law is a gas law in chemistry that states "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules". This means that if two gases have the same volume and pressure, and temperature, they will have the same number of molecules. [1]


  1. "Avogadro's law". Encyclopædia Britannica. Retrieved 22 April 2020.