define unified mass.

Asked by G.Karthik | 24th Aug, 2008, 07:44: PM

Expert Answer:

The unified atomic mass unit (u), or dalton (Da) or, sometimes, universal mass unit, is a unit of mass used to express atomic and molecular masses. It is the approximate mass of a hydrogen atom, a proton, or a neutron.

Answered by  | 25th Aug, 2008, 08:20: AM

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