PPT Slide

The Atomic Mass Scale

1H weighs 1.6735 x 10-24 g and 16O 2.6560 x 10-23 g.

We define: mass of 12C = exactly 12 amu.

Using atomic mass units:

1 amu = 1.66054 x 10-24 g

1 g = 6.02214 x 1023 amu

Atomic and Molecular Weights