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Bromine consists of two major isotopes with the following percent abundances and atomic masses: 79Br (50.54% and 78.918 amu) and 81Br (49.46% and 80.916 amu). Calculate the average atomic mass of bromine.

  • chem -

    (78.918*0.5054) + (80.916*0.4946) = x
    Solve for x.

  • chem -

    78.918

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