Uzupełnij podane równania reakcji
PbO2 --> .... +O2
SnO + .... --> ... + CO2
MnO2 --> MnO + ....
Fe2O3 + Co ---> ... + ...
... + H2 ---> Pb + ...
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PbO2 --> Pb + O2
SnO + CO --> Sn + CO2
2MnO2 --> 2MnO + O2
Fe2O3 + 3CO ---> 2Fe + 3CO2
PbO + H2 ---> Pb + H2O