Which of the following reactions are used in submarines for air regeneration?
А. 2Na2O2 + 2CO2 = 2Na2CO3 + O2
B. 2KMnO4 = K2MnO4 + MnO2 + O2
C. 2NaNO3 = 2NaNO2 + O2
D. 2H2O2 = 2H2O + O2
E. 2KClO3 = 2KCl + 3O2
