1 mol is the amount of substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12.

Avogadro's law close Avogadro's lawAt a given temperature and pressure, equal volumes of different gases contain an equal number of molecules. states: equal volumes of different gases contain an ...

EXACTLY a century has passed away since the eminent Italian physicist Avogadro published the law which, bearing his name, is now familiar to every elementary student of chemistry or physics.