设,不纯的硝酸铵样品100g,含硝酸铵是xg100*30%=x*2N/NH4NO3*100%30=28/80*%xx=85.7g该样品中硝酸铵的质量分数为85.7/100*100%=85.7%
nh4no3的式量为80则,纯净的nh4no3中,氮的质量分数应为28/80=35%故,该样品中硝酸铵的质量分数应为33.6%/35%=96%
NH4NO3中含N%=28/80=35%样品中含NH4NO3%=30%/35%=86%