ПОЖАЙЛУСТА!
1) Al2(SO4)3 = Al(OH)3 = Al2O3 = AlCl3 = Al(OH)3 = Al(NO3)3
2) Fe2(SO4)3 = Fe(NO3)2 = Fe2O3 = Fe2(SO4)3
3) Zn = ZnO = ZnSO4 = Zn(OH)2 = ZnO = Zn
4) K = KOH = K2CO3 = KCl​

dasha1957    2   01.04.2020 23:27    2