An element consists of two isotopes: The first isotope has an atomic mass of 86.905 AMU and a percent abundance of 51.83% and the second isotope has an atomic mass of 88.905 AMU and a percent abundance of 48.17%. What is the average atomic mass of this element?

Chemistry by OpenStax (2015-05-04)
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ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
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Chapter2: Atoms, Molecules, And Ions
Section: Chapter Questions
Problem 22E: An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99...
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An element consists of two isotopes: The first isotope has an atomic mass of 86.905 AMU and a percent abundance of 51.83% and the second isotope has an atomic mass of 88.905 AMU and a percent abundance of 48.17%. What is the average atomic mass of this element?  

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