Chemistry 9701 · AS & A Level · Atoms, molecules and stoichiometry

Atoms, molecules and stoichiometry — practice question

Which of the following statements is correct?

  • AThe relative atomic mass of a $^{35}\text{Cl}$ atom is $35.5$.
  • BThe relative formula mass of $\text{CaCO}_3$ is $100.1$.
  • CThe relative isotopic mass of a $^{24}\text{Mg}$ atom is $24.3$.
  • DThe relative molecular mass of $\text{O}_2$ is $16.0$.

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