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2d
3f
4a
5c
1- ZnO + C→Zn + CO
2 2Cu2O + Cu2S→6Cu + SO2
3.3Mn3O4 + 8Al→9Mn + 4Al2O3
4.FeCr2O4 + 4C→2Cr + Fe + 4CO
5 MoO3 + 3H2→Mo + 3H2O
gwarantuje poprawność :)