Химия 8 класс..........

Question

Химия 8 класс..........

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Answer 1

1. 2Zn+O2=2ZnO
2.ZnO+H2SO4=ZnSO4+H2O
3.ZnSO4+2KOH=Zn(OH)2+K2SO4
4.Zn(OH)2+2NaNO3=Zn(NO3)2+2NaOH