CH2=CH-C(CH3)=CH2+ HBr= CH2(Br)-CH=C(CH3)-CH3
2H2O2 = 2H2O + O2
Ответ:
Сu -> CuS -> CuO -> Cu
1. Cu + t° + S -> CuS
2. 2CuS + 3O2 -> 2CuO + 2SO2
3. CuO + CO -> Cu + CO2