Question

Calculate the molecular mass of hydrogen bromide (HBr). (Atomic masses : H = 1 u ; Br = 80 u)

Answer 1

Given:

Atomic mass of H = 1 u

Atomic mass of Br = 80 u

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

(1 × 1) + (1 × 80) = 81

Hence, molecular mass of hydrogen bromide is 81 u.