Дано:                                     3AgNO3+ FeCl3=Fe(NO3)3+3AgCl(осадок)

 m(AgNO3)=340                     

                                                       M(AgNO3)=170г/моль

W(AgNO3)=6                               M(AgCl)=143,5г/моль

m (AgC)-?                              m(AgNO3)=340*0,06=20,4г                                                                               

n(AgNO3)=20,4: 170=0,12моль

                                             n(AgNO3)=n(AgCl)=0,12моль

m(AgCl)=0,12 *143,5=17,22г