Sun March 18, 2012 By:

mole concept

Expert Reply
Mon March 19, 2012

Atomic mass and mass of an atom is the same. The atomic mass is defined as the mass of an atom, which can only be one isotope at a time and is not an abundance-weighted average like atomic weight.

Relative atomic mass is a synonym for atomic weight and is defined as the weighted mean of the atomic masses of all the atoms of a chemical element found in a particular sample, weighted by isotopic abundance.

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