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A sample of 0, 3220g of an ionic compound containing bromide ions (Br-) is dissolved in water and treated with excess of AgNO3. If the mass of the precipitate

of AgBr formed is 0, 6964g, answer: a) what percentage of bromine in molar mass? b) Give the mass of bromine in the compound formed. c) Which the percentage by mass of bromine in the original compound?

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  1. a. I have no idea what you're talking about.
    b. AgBr is compound formed.
    mass Br (not Br2) in the AgBr is
    0.6964 x (atomic mass Br/molar mass AgBr) = ?

    %Br (not Br2) in compound is
    %Br = [(answer b)/mass sample)]*100 = ?

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