1.

Which of the following is/are correct statement(s)?

Answer»

Gram ATOMIC mass of an element inay be defined as the mass of Avogadro's NUMBER of atoms.
The molecular mass of a diatomic elementary gas is TWICE its atomic mass.
Gay Lussac's law of chemical combination is valid for all substances.
A pure compound has always a fixed proportion of masses of its constituents.

Solution :Gay Lussa.c law is TRUE only for gaseous substances.


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