Question

Which of the following pairs of gases contain the same number of molecules ?

(a) 16 g of O₂ and 14 g of N₂

(c) 28 g of N₂ and 22 g of CO₂

(b) 8 g of O₂ and 22 g of CO₂

(d) 32 g of O₂ and 32 g of N₂

Answer 1

Correct option is (a) 16 g of O₂ and 14 g of N₂

16g of O₂ = \(\frac{16}{32} \) = 0.5 moles

14g of N₂ = \(\frac{14}{28} \) = 0.5 moles