Question

Carbon exists as the isotope carbon _12 , with a fractional abundance of 0.9890 and a mass of exactly 12Mu, and carbon _13, with a fractional abundance of 0.110 and a mass of 13.00335 Mu. Calculate the average atomic mass of carbon

Answer 1

Answer:

The average atomic mass of carbon is 13.298385 amu.

Explanation:

Average atomic mass of Carbon=∑isotopic mass×fraction abundance

                                                   =(12×0.9890) + (13.00335× o.110)

                                                   =13.298385 amu