
Define gram molecular mass.

Important Questions on Basic Concepts Atoms & Molecules

State Avogadro's hypothesis. What are its applications? The vapour density of a gas is . Calculate the volume occupied by 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 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. of a metal oxide was heated in a current of dry hydrogen when of water was formed. Calculate the equivalent mass of the metal.
