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March 28, 2017

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Determine the percent composition by mass of ammonia sulfate.

  • Chemistry - ,

    I believe you mean ammoniUM sulfate.

    The formula is (NH4)2 SO4,
    so it has 2 N's, 8 H's, 1 S and 4 O atoms.

    Calulate the molar mass (28 + 8 + 32 + 64) and compute the mass percentages of each element.

  • Chemistry - ,

    I think ammonia sulfate is (NH3)2SO4
    What you need to do first is find out what the molar mass is for all of those elements combined.

    2N=2*14.00
    6H=6*1.008
    S=32.065
    4O=4*15.999

    add those up and get the molar mass then to find the %of each element in the compound

    (Total mass of element/total MM) * 100%

  • Chemistry - ,

    Oh sorry, drwls is right. I got my compound wrong. There should be 8 H

  • Chemistry - ,

    thank you both.

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