What is a) empirical weight, b) formula weight and c) molecular weight? Are they related?

Empirical formula mass is the mass of the simplest formula

Formula weight is the mass of the elements in the formula. It could be a dimer.

The molecular weight is the sum of the mass of the elements in the formula

there is no such empirical weight in chemistry . it is superfluous '

formula weight & molecular weight are one and same thing

formula means molecular formula

when you say formula it means molecular otherwise only formula in chemistry

does not exist.

BUT THERE IS EMPIRICAL FORMULA.

e.g. ethanoic acid

empirical formula = C H2 O

molecular formula ( STRUCTURAL ] = CH3 - COOH [ C2H4O2 ]

a) The empirical weight is the weight of the empirical formula of the substance being discussed

b) The formula weight of the substance is the sum of the masses of the atoms in the substance being discussed.

c) The molecular weight of the substance is the weight of the compound being discussed.

Yes, they are all related mathematically.

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