Question

Calculate molar mass of - Carbon di oxide, Methane, Ethane, Calcium chloride, Aluminium oxide & Sodium sulphate​

Answer 1

Explanation:

Molar mass is the total of atomic mass of all the elements present in the molecules.

CO₂ = 12 + (2 × 16) = 44 g

CH₄ = 12 + (4×1) = 16 g

C₂H₆ = (12 × 2) + 6 = 30 g

CaCl₂ = 40 + (2×35.45) = 110.9 g

Al₂O₃ = (2 × 27) + (3 × 16) = 54 + 48

                                           = 102 g

Na₂SO₄ = ( 2 × 23) + 32 + (4 × 16) =78 + 64 = 119 g