1.Zn->ZnCl2->Zn(OH)2->Zn->ZnSO4 2.NaOH+ HCl=
Cu(OH)2+HNO3=
BaCl2+Na2SO4=
Al(OH)3+HCl=
CuSO4+KOH=
3.ПРИ РАЗЛОЖЕНИИ 200Г CaCO3 ОБРАЗОВАЛСЯ ГАЗ НАЙТИ МАССУ ГАЗА 
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