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9.00g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen,...

9.00g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 70./gmol, is burned completely in excess oxygen, and the mass of the products carefully measured:

product mass
carbon dioxide

28.29g
water

11.58g

Use this information to find the molecular formula of X

.

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