... H2NC2H3(COOH )2 C (H2N)2C2H2(COOH )2 D H2NC3H5(COOH )2 89 Polietilen c trựng hp t etilen Hi 28 0 gam polietilen ó c trựng hp t bao nhiờu phõn t etilen? A 5ì6, 02. 1 023 B 10ì6, 02. 1 023 C 15ì6, 02. 1 023 ... NH3, (CH3)2NH, C6H5NH2, CH3NH2 B (C6H5)2NH, C6H5NH2, NH3, CH3NH2, (CH3)2NH C (C6H5)2NH, NH3, C6H5NH2, CH3NH2, (CH3)2NH D C6H5NH2, (C6H5)2NH, NH3, CH3NH2, (CH3)2NH 13 Ho tan hon ton 19 ,2 gam Cu ... ca cỏc ion l A Zn2+, Fe2+, H+, Ni2+, Fe3+, Ag+ B Zn2+, Fe2+, Ni2+, H+, Fe3+, Ag+ C Zn2+, Fe2+, Ni2+, H+, Ag+, Fe3+ D Fe2+, Zn2+, Ni2+, H+, Fe3+, Ag+ 23 Ho tan 25 gam CuSO4.5H2O vo nc ct c 500ml...