... NO2 63 100 12 46 0,5 89 gam 63 t nFe = x mol, nCu = y mol ta cú: 56x 64y 12 x 0,1 3x 2y 0,5 y 0,1 %m Fe( NO3 )3 0,1 242 100 27,19% 89 %m Cu( NO3 )2 0,1 188 100 21 ,12% (ỏp ... 53 58,5 36 100 = 27,84% (ỏp ỏn B) 58,5 36 103 53 Vớ d 7: Trn 100 ml dung dch A (gm KHCO3 1M v K2CO3 1M) vo 100 ml dung dch B (gm NaHCO3 1M v Na2CO3 1M) thu c dung dch C Nh t t 100 ml dung ... ng l A 3,24 gam B 2,28 gam C 17,28 gam D 24 ,12 gam Hng dn gii n AgNO3 ( ban đầu ) = 340 = 0 ,12 mol; 170 100 n AgNO3 ( ph.ứng) = 0 ,12 25 = 0,03 mol 100 Cu + 2AgNO3 Cu(NO3)2 + 2Ag lovebook.vn...