Question

The molecular mass of CO₂ is 44 amu. Avogadro number is 6.02 × 10²³. Therefore, the mass of one molecule of CO₂ is

(a) 3.65 x 10^-23

(b) 3.65 x 10²³

(c) 7.31 x 10^-23

(d) 7.31 x 10²³

Answer 1

Correct option is (c) 7.31 x 10^-23

Mass of 1 molecule of CO₂ = 44 x 1.66 x 10^-24 g

= 7.31 x 10^-23 g