Question

Calculate the molar mass of ammonia.

Answer 1

1. Molar mass is the sum of the masses of all the individual atoms present in a molecule or compound.
2. The chemical formula of ammonia is ${\mathrm{NH}}_3$.
3. The atomic mass of Nitrogen N is 14 u.
4. The atomic mass of hydrogen H is 1 u.
5. $\mathrm{Molar}\mathrm{mass}\mathrm{of}\mathrm{ammonia}\left({\mathrm{NH}}_3\right)=(\mathrm{Atomic}\mathrm{mass}\mathrm{of}\mathrm{nitrogen})\mathrm{x}1+(\mathrm{Atomic}\mathrm{mass}\mathrm{of}\mathrm{hydrogen})\mathrm{x}3$

$=(14\mathrm{x}1)+(1\mathrm{x}3)$

$=17\mathrm{g}$

Molar mass of ammonia (NH₃) is 17 g.