(1)此袋化肥含N元素的质量为50*64.3%=32.15Kg (2)樱团迹含纯NH4NO3=50*91.86%=45.93Kg(3)该袋化脊并肥的纯度是多或晌少?32.15/35%=91.86%
(1)m(N)=50*34.3%=17.15 (2)散州在NH4NO3中N元素所占百分比=28/80=0.35 m(NH4NO3)=17.15/0.35=49 (3)悔掘辩纯度=49/碧缺50=98%