1. 2KMnO4 ----> K2MnO4 + MnO2 + O2
2. 2Ca + O2 = 2CaO
3. 2H2 + O2 = 2H2O
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1. 2KMnO4 ----> K2MnO4 + MnO2 + O2
2. 2Ca + O2 = 2CaO
3. 2H2 + O2 = 2H2O