The element lithium has an atomic weight of 6.941 amu. There are only two isotopes of lithium,a6Li with a mass of 6.0151223 amu anda7Li with a mass of 7.0160040 amu. What are the percent isotopic abundances of lithium?

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Chapter3: Atoms And Elements
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The element lithium has an atomic weight of 6.941 amu. There are only two isotopes of lithium,a6Li with a mass of 6.0151223 amu anda7Li with a mass of 7.0160040 amu. What are the percent isotopic abundances of lithium?

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