Question

Find the molecular mass of nitric acid $$(\mathrm{HNO}_{3})$$. 
Atomic mass - $$(\mathrm{H}=1 \mathrm{u} ; \mathrm{N}=14 \mathrm{u} ; \mathrm{O}=16 \mathrm{u})$$.

Answer 1

The molecular mass is found by adding the atomic masses of one H atom, one N atom, and three O atoms.

Thus, $$(\mathrm{HNO}_{3})$$ has molecular mass = (1 × 1) + (14 × 1) + (16 × 3) = 63 u. Therefore, the molecular mass of nitric acid is 63 u.