O-LevelChemistryStoichiometry5070/11 · May/June 2010 · Q101 Mark

Two different hydrocarbons each contain the same percentage by mass of hydrogen. It follows that they have the same

Aempirical formula.

Bnumber of isomers.

Crelative molecular mass.

Dstructural formula.

✓ Correct answer

A: empirical formula.

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Topic: Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2010 Paper 1 Variant 1, question 10.

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