Chemistry, 06.12.2020 01:20 serenitynycole

What is the average atomic mass of silicon given the following abundance information on the isotopes of silicon? [Si-28 (mass 28 amu) has an abundance of 92.21%]
[Si-29 (mass 29 amu) has an abundance of 4.70%]
[Si-30 (mass 30 amu) has an abundance of 3.09%]

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What is the average atomic mass of silicon given the following abundance information on the isotopes...