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

The mole and the Avogadro constant — practice question

The Haber process is used to manufacture ammonia from nitrogen and hydrogen. $\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g)$ What percentage yield is obtained when $60\,\text{kg}$ of ammonia is produced from $60\,\text{kg}$ of hydrogen?

  • A$5.9\%$
  • B$17.6\%$
  • C$35.3\%$
  • D$50.0\%$

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