Question

Calculate the molecular masses of the following compounds  :

Ethyne, C₂H₂

(Atomic masses : C = 12 u ; H = 1 u)

Answer 1

Given:

Atomic mass of C = 12 u

Atomic mass of H = 1 u

Therefore, molecular mass of C₂H₂ (acetylene) can be calculated as follows:

(2 × 12) + (2 × 1) = 26

Hence, molecular mass of acetylene is 26 u.