What are the units of atomic mass and molar mass?
The atomic mass of an element is the mass of one atom of that element compared to 1/12th the mass of a carbon-12 atom. It is expressed in atomic mass units (amu) or unified atomic mass units (u).
The molar mass of a substance is the mass of one mole of that substance. It is expressed in grams per mole (g/mol) or grams (g).