Element X has two isotopes. One has a mass of 10.0 amu and
Chapter 7, Problem 7.1.24(choose chapter or problem)
Element X has two isotopes. One has a mass of 10.0 amu and an abundance of 20.0%.The other has a mass of 11.0 amu and an abundance of 80.0%. Estimate the average atomic mass.What element is it?
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