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stabileste coeficientii:dau coroana si 20 puncte.multumesc

ZnO+HNO3 - Zn (NO3)2 +H2O
CuO+HCl - CuCl2+H2O
NiCl2+NaOH - Ni (OH)2sageata in jos +NaCl​


Răspuns :

Răspuns:

ZnO+2HNO3=Zn(NO3)2+H2O

CuO+2HCl=CuCl2+H2O

NiCl2+2NaOH=Ni(OH)2↓+2NaCl