Define gram molecular mass.

State Avogadro's hypothesis. What are its applications? The vapour density of a gas is $11.2$. Calculate the volume occupied by $1.6$ grams of the gas at STP.

State and explain Avogadro's hypothesis. Derive the relations between molecular mass and vapour density of a gas.

Determine the atomicity of oxygen by applying Avogadro's law.

Derive from the Avogadro's law that molecular mass is equal to mass of $22.4 \mathrm{litres}$ of gas or vapour at NTP.

State and explain Avogadro's law. How does it explain Gay-Lussac's law of gaseous volumes. How it could discard Berzelius's hypothesis?

Derive the relationship between molecular mass and vapour density of gas from Avogadro's hypothesis. $0.796 \mathrm{g}$ of a metal oxide was heated in a current of dry hydrogen when $0.18 \mathrm{g}$ of water was formed. Calculate the equivalent mass of the metal.