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Molecular formula=n(empirical formula) So we have n=10 and we need to find the molecular formula. molecular mass for CH2 which is equal to 14.027 g/mol. So the empirical formula as given is CH2 and therefore a molecular formula of the form CnH2n. Substitute values if n, C10H20 which is the molecular formula. Named as Isobutylcyclohexane with molecular weight of 140.27 g/mol. To verify the obtained values: n= Molecular formula/Empirical formula n=140.27/14.027=10 as given in the question.