Question

Calculate the molecular mass of nitric acid, HNO₃. (Atomic masses : H = 1 u ; N = 14 u ; O = 16 u)

Answer 1

Given:

Atomic mass of H = 1 u

Atomic mass of N = 14 u

Atomic mass of O = 16 u

Therefore, molecular mass of HNO₃ can be calculated as follows:

(1 × 1) + (1 × 14) + (3 ×16) = 63

Hence, molecular mass of nitric acid is 63 u.