Chemistry 5070 · O Level · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

What is the number of atoms present in $27.0\,\mathrm{g}$ of water, $\mathrm{H_2O}$?

  • A$9.030 \times 10^{23}$
  • B$1.806 \times 10^{24}$
  • C$2.709 \times 10^{24}$
  • D$3.612 \times 10^{24}$

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