Chemistry 5070 · O Level · Relative masses of atoms and molecules

Relative masses of atoms and molecules — practice question

Which one has the largest mass of oxygen?

  • A$0.2\,\text{mol}$ of aluminium nitrate, $\text{Al(NO}_3)_3$
  • B$0.3\,\text{mol}$ of potassium sulfate, $\text{K}_2\text{SO}_4$
  • C$0.4\,\text{mol}$ of sodium nitrate, $\text{NaNO}_3$
  • D$0.5\,\text{mol}$ of magnesium carbonate, $\text{MgCO}_3$

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