Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

The equation showing the decomposition of calcium carbonate is given. $\text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2$ What mass of calcium oxide is formed when $10\text{ g}$ of calcium carbonate is heated?

  • A$4.4\text{ g}$
  • B$5.0\text{ g}$
  • C$5.6\text{ g}$
  • D$10.0\text{ g}$

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