A compound has the empirical formula of $"CH"_2"O"$ and a molar mass of 60 g/mole. What is the molecular formula?

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Answer 1 · 2018-04-03T12:49:19

$"C"_2"H"_4"O"_2$

Empirical formula $"= CH"_2"O"$
Empirical formula mass $"= 12g/mol + 2 g/mol + 16 g/mol = 30 g/mol"$

$"Molecular formula mass"/"Empirical formula mass" = "60 g/mol"/"30 g/mol" = 2$

Molecular formula $= 2 × "CH"_2"O" = "C"_2"H"_4"O"_2$

A compound has the empirical formula of "CH"_2"O""CH"_2"O" and a molar mass of 60 g/mole. What is the molecular formula?