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23 November, 01:41

What percent by mass of ammonium sulfate

((NH4) 2SO4) is nitrogen (N) ?

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  1. 23 November, 03:33
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    The percentage of mass of nitrogen in ammonium sulfate is 21.20%

    Explanation:

    Solving this problem, we need to know that nitrogen is a gas and also we need to calculate the molar mass of the compound which (NH4) 2SO4

    Mm of (NH4) 2SO4 =

    N - 14.0067

    H - 1.00784

    S - 32.065

    O - 15.999

    Mm = (14.0067) 2 + (1.00784*4) 2+32.065 + (15.999*4)

    Note: Because there are 4*2=8atoms of hydrogen and 4 atoms of oxygen and 2 atoms of nitrogen in the compound

    Mm = 28.0134 + 8.06272+32.065+63.996

    = 132.13712g/mol

    Since there are two atoms of nitrogen in ammonium sulfate

    The mm of N = 2 * 14.0067

    = 28.0134g/mol

    Therefore, to calculate percent massof N in (NH4) 2SO4

    We divide the mm of N by mm of (NH4) 2SO4 multiplied by 100

    i. e. 28.0134/132.14

    = 0.212

    = 0.212 * 100

    = 21.20% mass of nitrogen
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