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Ariel G.

asked • 02/09/20

A compound with the empirical formula CH 2 has a molar mass of 140 g/mol. What is the molecular formula for this compound?

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Rebecca M. answered • 02/09/20

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MS in Chemistry and over 25 years industrial experience

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The empirical formula has a mass of 14 or 1/10 of the molecular mass. Thus the empirical formula needs to be multiplied by 10 to have C20H10.

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J.R. S.

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140/14 = 10 meaning 10 empirical formulae in 1 molecular formula. So molecular formula is C10H20, not C20H10.

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02/10/20

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