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? [At $25^\circ\text{C}$ and $1$ atmosphere pressure, $1$ mol of gas occupies $24\ \text{dm}^3$.]

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

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