What is the molecular formula of a compound which contains 92.3% carbon and 7.7% hydrogen by mass, if 0.39g of its vapour occupies an equal volume of .01g of hydrogen gas under identical conditions?(adsbygoogle = window.adsbygoogle || []).push({});

I don't understand how to do this question. I can figure out the empirical formula... but I don't know how to get the molecular formula. Any help would be appreciated.

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# Determining molecular formula

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