Составить уравнение электронного баланса:
1)Nacl=Na+Cl2
2)Nacl=Cl2+H2+NaOH
3)FeO+H2=H2O+Fe
4)ZnO+C=Co+Zn
5)Cr2O3+NH3=Cr+H2O+N2
6)Cr2O3+Al=Al2O3+Cr
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