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

Atoms, molecules and stoichiometry — practice question

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

  • 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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