what is the difference between molecular mass and formula mass?

Asked by sumanmd dharaneppagoudar | 20th Jun, 2013, 06:35: PM

Expert Answer:

Molecular mass is the mass of a molecule, while Formula Mass is the mass of ionic compound. 

they are almost the same thing, yet we use two different terms  because molecules are covalent compounds meaning they have only non-metals so then an ionic compounds cannot be a molecule and therefore it wouldn't make sense to find the molecular mass for an ionic compound so we just call it the "formula mass" when we're talking about ionic compounds .

Answered by  | 20th Jun, 2013, 11:44: PM

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