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

Atoms, molecules and stoichiometry — practice question

The formulae for two hydrocarbons are $\text{C}_W\text{H}_X$ and $\text{C}_Y\text{H}_Z$. $W$, $X$, $Y$ and $Z$ stand for different whole numbers. $\frac{W}{X} = \frac{Y}{Z}$ When the two hydrocarbons are compared, which row is correct?

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