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1. Avogadro’s Hypothesis

Each volume of all types of gases has same number of molecules.
The temperature and pressure must be same.
Taking one volume of a hydrogen gas.
Mixing it with one volume of Chlorine gas.
The result is two volumes of Hydrogen Chloride.
Provided the temperature is same.
The pressure is same.
One molecule of Hydrogen gas.
Added with one molecule of Chloride gas.
Gives two molecules of the Hydrogen Chloride of gases.

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