Mr( Ca(NO3)2) = 40 + 14*2 + 16*6 = 164
Mr(KNO3)=39+14+16*3 = 101
Mr(NH4NO3) = 14*2 + 1*4 + 16*3 =80
NH4NO3, KNO3, Ca(NO3)2
Mr( Ca(NO3)2) = 40 + 14*2 + 16*6 = 164
Mr(KNO3)=39+14+16*3 = 101
Mr(NH4NO3) = 14*2 + 1*4 + 16*3 =80
NH4NO3, KNO3, Ca(NO3)2