Question

Nitrogen combines with hydrogen in the ratio of 14 : 3 to form ammonia gas. The mass of nitrogen required to combine with 5.7 g of hydrogen is _____.

• A. 26.6 g
• B. 14.4 g
• C. 32.3 g
• D. 17 g

Answer 1

The correct option is A 26.6 g

Nitrogen : Hydrogen
14 : 3
? : 5.7 g
3 g of Hydrogen ≡ 14 g of Nitrogen
5.7 g of Hydrogen ≡ $\frac{14}{3}$ × 5.7 g of Nitrogen
5.7 g of H = 14 × 1.9 g of Nitrogen
Mass of N = 26.6 g