Problem 2:
ammonia, NH3, 14.0 g N/ 17.0 g NH3 x 100 = 82.4% N
ammonium biphosphate, (NH4)2PO4, 28.0 g N/131 g (NH4)2PO4 x 100 =21.4 % N
ammonium nitrate, NH4NO3, 28.0 g N/ 80.0 g NH4NO3 x 100 = 35.0% N
ammonium sulfate, (NH4)2SO4, 28.0 g N/ 132 g (NH4)2SO4 x 100 = 21.2% N
urea, N2H4CO, 28.0 g N/ 60.0 g N2H4CO x 100 = 46.7 % N
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