Chemistry 5070 · O Level · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

Nitrogen and hydrogen are reacted to form ammonia in the Haber process. $\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g)$ Calculate the percentage yield when $60\,\text{kg}$ of ammonia is obtained from $60\,\text{kg}$ of hydrogen?

  • A5.9%
  • B17.6%
  • C35.3%
  • D50.0%

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