It states that equal volumes of gases at the same temperature and pressure contain the same number of molecules, regardless of their chemical temperature and physical properties...
The avogrados number is constant... 6.02x10^23 :-) 

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Avogadros Law is an experimental gas law relating volume of a gas to the amount of the substance the gas present..

Avogadro law states that, "equal volume of all gases , at the same temperature and pressure , have the same number of molecules.