Gallium has 2 naturally occurring isotopes, 69Ga and 71Ga. If 69Ga has an exact isotopic mass of 68.956 amu. and 71Ga has an exact isotopic mass of 70.853 amu. The atomic mass of Gallium is 69.732 amu. What is the % abundance of 69Ga?

Chemistry: Principles and Reactions
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Chapter2: Atoms, Molecules, And Ions
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Problem 21QAP: Bromine has two occuring isotopes: 79Br with atomic mass 78.9183 and 81Br with atomic mass 80.9163....
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Gallium has 2 naturally occurring isotopes, 69Ga and 71Ga. If 69Ga has an exact isotopic mass of 68.956 amu. and 71Ga has an exact isotopic mass of 70.853 amu. The atomic mass of Gallium is 69.732 amu. What is the % abundance of 69Ga?

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