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

Atoms, molecules and stoichiometry — practice question

What mass of gas would fill a volume of $3\,\text{dm}^3$ at $25^\circ\text{C}$ and $1$ atmosphere pressure? [$1\,\text{mol}$ of gas occupies $24\,\text{dm}^3$ at $25^\circ\text{C}$ and $1$ atmosphere pressure.]

  • A$3.2\,\text{g } \text{O}_2$ gas
  • B$5.6\,\text{g } \text{N}_2$ gas
  • C$8.0\,\text{g } \text{SO}_2$ gas
  • D$11.0\,\text{g } \text{CO}_2$ gas

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