Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

The combustion equation for magnesium is given below. $2\mathrm{Mg} + \mathrm{O}_2 \rightarrow 2\mathrm{MgO}$. What mass of magnesium oxide is produced when $9.6\,\mathrm{g}$ of magnesium reacts completely?

  • A$8.0\,\mathrm{g}$
  • B$16.0\,\mathrm{g}$
  • C$24.0\,\mathrm{g}$
  • D$40.0\,\mathrm{g}$

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