1.

What is Chemical Formulae?

Answer»

The chemical formula of a substance is the symbolic representation of the actual number of atoms present in one molecule of that substance.

(a) Formula of one molecule of water is H2O. It shows that one molecule of water is made up of 2 atoms of hydrogen and one atom of oxygen.

(b) Formula of one molecule of sulphuric acid is H2SO4. It shows that one molecule of sulphuric acid is made up of 2 atoms of hydrogen, 1 atom of Sulphur and 4 atoms of oxygen.



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