Are atomic mass, formula mass, and molar mass the same thing?

1 Answer
Oct 21, 2015


Formula mass and molar mass are the same. Atomic mass refers to atomic particles.


When we write "formula mass", we usually mean the mass associated with 1 mole of such a formula; i.e. Avogadro's number of such a formula. Molar mass is the same thing: Avogadro's number of whatever stuff you have. The ability to successfully calculate equivalent masses of compounds is vital to success in Chemistry.

PS Atomic mass is the mass associated with a mole of atomic species; this is not always the same as olar mass: a mole of #O# atoms is #1/2# the mass of a mole of oxygen molecules , #O_2# species. Are you with me?