It gives the empirical formula mass A molecular formula can give the exact molecular mass It can predict the type of atoms in ionic compounds and polymers It can predict the oxidation states of atoms, their reactions, and products Empirical formulae are found by combustion analysis Molecular formulae are found by a mathematical procedure using empirical formulae For example, Benzene C 6H 6Ethene C 2H 4Glucose C 6H 12O 6etc To explain the molecular and empirical formulas of a compound, it is necessary to know the percentage of each element present in the compound.
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