Original post by Tcool
whats its definition|?
The relative mass of compound/formula that is relative to 1/12th the mass of carbon-12
Original post by Tcool
whats its definition|?
It's value is often expressed in g/mol - so it's the mass of one mole of that substance.
It's 'relative' because it's relative to carbon-12, which is defined as exactly 12 (the definition of the mole comes from this).
I should say that g/mol is just a way to think about it - as the above user has said, in reality it's the mass relative to 1/12 of carbon-12 and is dimensionless.
(edited 9 years ago)
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