How is the molar mass of an element different from the atomic mass of an element?

1. Molar mass is the mass of one mole per single element while atomic mass is the mass of an atom at rest or is the number of protons and neutrons.

2. Molar mass is measured in grams per mole while atomic mass is "unitless."

3. Atomic mass is measured via mass spectrometry while molar mass is computed via atomic weight.