Chemistry 0620 · IGCSE · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

Which sample has the largest number of molecules?

  • A$4\,\text{g of hydrogen}$
  • B$18\,\text{g of water}$
  • C$24\,\text{dm}^3$ of oxygen$
  • D$66\,\text{g of carbon dioxide}$

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