Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

The equation for the thermal decomposition of calcium carbonate is given below. $\text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2$ How much calcium oxide, in mass, 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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