Chemistry 5070 · O Level · Formulae

Formulae — practice question

The empirical formula of compound X is $\text{CH}_2$ and the relative molecular mass, $M_r$, of X is $70$. What is the molecular formula for X?

  • A$\text{CH}_2$
  • B$\text{C}_2\text{H}_4$
  • C$\text{C}_5\text{H}_{10}$
  • D$\text{C}_n\text{H}_{2n}$

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