Question

The density of carbon dioxide is equal to 1.977 kg m^-3 at 273 K and 1 atm pressure. Calculate the molar mass of CO₂

Answer 1

Molecular mass = Density x Molar 

volume Molar volume of CO₂ = 2.24 x 10^-2 m³ 

Density of CO₂ = 1.977 kg m^-3

Molecular mass of CO₂ = 1.977 x 10³ gm^-3 x 2.24 x 10^-2 m³ 

= 1.977 × 10 × 2.24 

= 44 g