Chemistry 9701 · AS & A Level · Atoms, molecules and stoichiometry

Atoms, molecules and stoichiometry — practice question

Use of the Data Booklet is needed for this question. Nickel accounts for $20\%$ of the coin's total mass. The coin has a mass of $10.0\,\text{g}$. How many nickel atoms are present in the coin?

  • A$2.05 \times 10^{22}$
  • B$4.30 \times 10^{22}$
  • C$1.03 \times 10^{23}$
  • D$1.20 \times 10^{24}$

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