Question

The number of moles of ethane in 60 g is …

(a) 2 

(b) 4 

(c) 0.5 

(d) 1

Answer 1

(a) 2 

C₂H₆ – Ethane – molar mass = 24 + 6 = 30 g 

30 g of C₂ H₆ contains = 1 mole. 

∴ 60 g of C₂H₆ will contains = 2 x 1 = 2 moles.