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

Relative masses of atoms and molecules — practice question

Of the compounds, which one has the greatest relative formula mass, $M_r$? [$A_r$: $\text{K}$, $39$; $\text{N}$, $14$; $\text{O}$, $16$; $\text{Ca}$, $40$; $\text{C}$, $12$; $\text{Li}$, $7$; $\text{S}$, $32$; $\text{Mg}$, $24$; $\text{Cl}$, $35.5$]

  • Acalcium carbonate
  • Blithium sulfate
  • Cmagnesium chloride
  • Dpotassium nitrate

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