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Chemistry, 09.09.2021 03:10 antmike31ox1v8e

An unknown element is a mixture of isotopes 129X and 132 X. The average
atomic mass of X is 129.91 amu.
What is the percent abundance of
132 X?

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Answers: 1

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An unknown element is a mixture of isotopes 129X and 132 X. The average
atomic mass of X is...
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