Re: Re: Re: Molar mass of C = 12.0107 g/mol ????

Re: Re: Re: Molar mass of C = 12.0107 g/mol ????   (05/12/2017, 2:35 PM)

The "typical mixture" is codified by the Commission on Isotopic Abundances and Atomic Weights. (It's a real thing.)

https://en.wikipedia.org/wiki/Commission_on_Isotopic_Abundances_and_Atomic_Weights

Also from Wikipedia "[a] normal sample is any reasonably possible source of the element or its compounds in commerce for industry and science and has not been subject to significant modification of isotopic composition within a geologically brief period"

https://en.wikipedia.org/wiki/Relative_atomic_mass