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18 March, 22:46

Silver has an atomic mass of 107.868 amu. The Ag-109 isotope (108.905 amu) is 48.16%. What is the amu of the other isotope?

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  1. 18 March, 22:55
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    The atomic mass of the other isotope = 106.905 amu

    Explanation:

    Step 1: Data given

    Atomic mass of silver = 107.868 amu

    Ag109 isotope has an atomic mass of 108.905 amu = 48.16 %

    Step 2: Calculate the abundance of the other isotope

    100.0 % - 48.6 % = 51.84 %

    107.868 = 0.4816*108.905 + 0.5184*X

    55.419352 = 0.5184X

    X = 106.905

    The atomic mass of the other isotope = 106.905 amu
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