1) 2 NaOH + H2O2 = H2O + O2 + Na2O
2) 3O2 + 4Al = 2 Al2O3
3) O2 + 2Cu = 2CuO
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Answers & Comments
1) 2 NaOH + H2O2 = H2O + O2 + Na2O
2) 3O2 + 4Al = 2 Al2O3
3) O2 + 2Cu = 2CuO