Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

Which gas sample has the greatest number of molecules?

  • A$24\,\text{dm}^3$ of carbon dioxide, $\text{CO}_2$
  • B$4\,\text{g}$ of hydrogen, $\text{H}_2$
  • C$36\,\text{dm}^3$ of hydrogen chloride, $\text{HCl}$
  • D$14\,\text{g}$ of nitrogen, $\text{N}_2$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI