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Chem

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(b) If the natural abundance of Ag-107 is 51.84%, what is the natural abundance of Ag-109?
%
(c) If the mass of Ag-107 is 106.905, what is the mass of Ag-109?
amu

I really need help. Can u say the answer then explain how you got it?

Thanks:)

  • Chem -

    Oops I just need c

  • Chem -

    106.905(0.5184) + massAg109(1-0.5184) = mass Ag from periodic table.
    Solve for the only unknown which is mass Ag 109.
    Remember the isotopes are averaged to obtain the atomic mass found in the periodic table.

  • Chem -

    THE FOLLOWING SOLUTIONS AREMIXED TOGETHER: 121mL OF 1.54 M AgNO3 AND 45mL OF 1.07 M K2SO4
    CALCULATE THE MOLAR CONCENTRATION OF Ag+ IONS IN THE FINAL SOLUTION

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