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Chemistry

Answered

mesitylene, a hydrocarbon that occurs in small amounts in crude oil, has an empirical formula of C3H4. The experimentally determined molecular weight of this substance is 121 amu. What is the molecular formula of mesitylene

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Answer:

Mass of 1 formula unit of C3H4 = 3*12 + 4*1 = 40 g /unit

Formula units in 1 molecule = 121/40 = 3

Molecular formula = (C3H4)3 = C9H12

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