HCL-H2-Cu-CUO-Cu(NO3)2

Question

HCL-H2-Cu-CUO-Cu(NO3)2

Answer 1

2 HCl + Zn → ZnCl2+H2  
CuO + H2 → Cu+H2O
2Cu + O2 → 2CuO 
CuO + 2HNO3 → Cu(NO3)2+H2O