the empirical formula of the compound is C₂H₅. Empirical formula is the simplest ratio of whole numbers of components in a compound. the mass of one empirical unit = (12 x 2) + (1 x 5)= 29 the molecular mass of the compound - 58 a.m.u the number of empirical units = molecular mass/mass of empirical unit = 58 / 29 = 2 There are 2 empirical units Molecular formula - 2(C₂H₅) therefore molecular formula - C₄H₁₀
