Question

A compound with the empirical formula CH2 was found to have a molar mass of approximately 112 g. Write the molecular formula of the compound.

2Points
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Answer 1

stochiometry

(empirical formula-EF) n = molecular formula(MF)

(CH₂)n = MF

molar mass of CH₂ = 12.1 (C) + 2.1 (H) = 14 g/mol

(14)n = 112

`\tt n=(112)/(14)=8`

molecular formula:

`\tt (CH_2)_8=\boxed{\bold{C_8H_(16)}}`