How do you determine the average weighted isotopic mass of Carbon?

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How do you determine the average weighted isotopic mass of Carbon?

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Answer 1 · 2017-02-05T22:13:38

Well, first you must quote the percentage isotopic masses of the common isotopes.

Explanation:

According to this site, #""^12C# has a 99% abundance, and #""^13C# has a 1% abundance (there are other isotopes, but these are the most abundant). The weighted average is #(12xx0.99)# #+(13xx0.01)# #"amu"# #=# #12.01# #"amu"#.

The #""^13C# isotope is a very important nucleus inasmuch as #""^13C{""^1H}# #"NMR spectroscopy"# can be routinely performed.

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How do you determine the average weighted isotopic mass of Carbon?

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