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(AQA AS Chemistry) Calculating empirical formula question

An alcohol containing carbon hydrogen and oxygen only has 64.9% carbon and 13.5% hydrogen by mass. Using this data, show that the empirical formula of the alcohol is C4H10O6.

How do you approach a question like this? Thanks in advance!
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Original post by fesselnd
An alcohol containing carbon hydrogen and oxygen only has 64.9% carbon and 13.5% hydrogen by mass. Using this data, show that the empirical formula of the alcohol is C4H10O6.
How do you approach a question like this? Thanks in advance!

Assume you have 100 g of the substance, in which case, the mass of C is the same as the %age, et.al.

Work out how many mol of each element there is (n = m/Mr) in the compound.

Simplify each amount, by dividing all three amounts by the smallest number of amounts.

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