Question

1. Cu - Cu(NO3) 2 - CuO CuSO 4 - Cu - CuCl2 2. K - KNO 3 - O 2 - MgO - MgCO 3- 3. FeSO 4 - Fe 2 (SO 4) 3 - Fe 2O 3 - Fe - FeCl -FeCl 3 

Answer 1

1)2AgNO3 + Cu → Cu(NO3)2 + 2Ag
2Cu(NO3)2 t→ 2CuO + 4NO2 + O2
CuO + H2SO4 → CuSO4 + H2O
2FeSO4 + CuSO4 → Cu + Fe2(SO4)3
Cu + Cl2 → CuCl2
2)8K + 10HNO3 → 8KNO3 + NH4NO3 + 3H2O
2KNO3 t→  2KNO2 + O2
MgH2 + O2 → MgO + H2O
MgO + CO2 → MgCO3
3)2FeSO4 + CuSO4 → Cu + Fe2(SO4)3
Fe2(SO4)3 t→ Fe2O3 + 3SO3
Fe2O3 + 2Al  t→ 2Fe + Al2O3
Fe + 2HCl → FeCl2 + H2
2FeCl2 + Cl2 → 2FeCl3

Answer 2

It seems like you have provided a list of chemical equations involving various elements and compounds. However, the format is not entirely clear. If you could specify what you would like to know about these chemical equations, I'd be happy to help you with explanations or any specific information you need. Please provide more context or questions related to these chemical equations, and I'll do my best to assist you.