2KMnO4 (t*)--> K2MnO4 + MnO2 + O2
2 + 1 + 1 + 1 = 5
4V + 5O2 --> 2V2O5
4 + 5 + 2 = 11
4Fe + 3O2 --> 2Fe2O3
4 + 3 + 2 = 9
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2KMnO4 (t*)--> K2MnO4 + MnO2 + O2
2 + 1 + 1 + 1 = 5
4V + 5O2 --> 2V2O5
4 + 5 + 2 = 11
4Fe + 3O2 --> 2Fe2O3
4 + 3 + 2 = 9