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 _____.

26.6 g

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14.4 g

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32.3 g

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17 g

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Solution

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

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