Ответ:
Zn(OH)2 = ZnO + H2O
ZnO + H2SO4 = ZnSO4 + H2O
ZnSO4 + Na2S = ZnS + Na2SO4
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Ответ:
Zn(OH)2 = ZnO + H2O
ZnO + H2SO4 = ZnSO4 + H2O
ZnSO4 + Na2S = ZnS + Na2SO4