How formula unit mass is different from molecular mass? - Vidyadip

Question

How formula unit mass is different from molecular mass?

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Answer

Formula mass	Molecular mass
Formula mass is the sum of the masses of atoms present in the empirical formula	Molecular mass of a molecule is the mass of a mole of that molecule
Calculated from amu units	Calculated from g/mol units
Calculated using the empirical formula	Calculated using the molecular formula
May or may not give the exact mass of a molecule	Always give the exact mass of a mole of molecules

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