pivoxa15
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In my table of elements, C is listed as having a weight of 12.0107. I presume it means 12.0107g/mole of carbon. I thought Carbon was defined to be 12g per mole?
Why Is Carbon Listed as 12.0107 g/Mole?
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Rach3
No, the mole was defined to be 12g of the Carbon-12 isotope, not of the naturally occurring isotope mix.
pivoxa15
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Rach3 said:
So that weight of C was taken as all types of carbon in nature, not just the 12 isotope. It would also suggest there are more heavier isotopes of carbon than lighter ones in nature.
Rach3
rctrackstar2007
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the amu of an atom is an average of the most common occurring isotopes
Rach3
Huh? A.m.u. is a unit of mass.
rctrackstar2007
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Rach3 said:
umm...ya, thus, atomic mass unit
Tyris
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Yes, but the a.m.u. is the mass of a nucleon. You're confusing it with r.a.m., or relative atomic mass - which is related to the proportion of isotopes, as Rach3 said.