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Completati ecuatile:
Cu+AgNO3....
H2+CuO.....
Zn+CuSO4....
Na+H(OH)...



Răspuns :

Cu+AgNO3 -> CuNO3 + Ag↓
H2 + CuO -> H2O + Cu↓
Zn+CuSo4 -> ZnSo4 + Cu↓
Na+[tex] \frac{1}{2} [/tex]H(OH)-> NaOh + H2↑
H(OH) = H20