Verified answer

Ответ:

Объяснение:

2H2O2 --- 2H2O + O2

2Ca + O2 --- 2CaO

2Na + Cl2 -- 2NaCl

2BaO + O2 --- 2BaO2

4CuO --- 2Cu2O + O2

2SO2 + O2 --- 2SO3

2FeBr3 --- 2FeBr2 + Br2

CuCl2 + Na2S --- CuS + 2NaCl