a. A hydrocarbon contains 92.3% by mass of carbon. Work out the empirical formula of this hydrocarbon.
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a. A hydrocarbon contains 92.3% by mass of carbon. Work out the empirical formula of this hydrocarbon.
b. The relative molecular mass of this hydrocarbon was found by mass spectrometry to be 78. Work out its molecular formula. (Ar: H = 1, C = 12)
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