Question

Calculate the molecular weight of the following:

Ammonium nitrate $\left({\mathrm{NH}}_4{\mathrm{NO}}_3\right)$

Answer 1

Definition of molecular weight

Molecular weight, also called molecular mass, is the mass of a molecule of a substance, based on 12 as the atomic weight of carbon-12. It is calculated in practice by summing the atomic weights of the atoms making up the substance's molecular formula.

Calculation:

Given, $\mathrm{N}=14,\mathrm{H}=1,\mathrm{O}=16$

The molecular weight of Ammonium nitrate = $14+1\times 4+14+3\times 16=80amu$

$\therefore$The molecular weight of Ammonium nitrate ${\mathrm{NH}}_4{\mathrm{NO}}_3$= 80 amu