Question

What is the importance of chemical formula? State two points.

Answer 1

Molecular formula: Molecular formula of a compound is the symbolic representation of the one molecule of a compound which shows the number of atom of each element that is present in it.

For example, ${\mathrm{H}}_2\mathrm{O}$ (a water) molecule represents that water is made up of 2 atoms of hydrogen element and one atom of oxygen.

Importance of chemical formula:

• It represents one molecule of the compound.
• It also states the number of each kind of atom present in one molecule.
• the mass of one molecule of the compound can also be calculated if the atomic mass of each element is known.