Zn+?→ZnO Mg+HCL→MgCl2 + ? Au2O3→Au+? Al+ CuCl2 → Cu+?

Question

Zn+?→ZnO
Mg+HCL→MgCl2 + ?
Au2O3→Au+?
Al+ CuCl2 → Cu+?

Answer 1

2Zn+O2→2ZnOMg+2HCL→MgCl2 + H2
2Au2O3→4Au+3O2
2Al+ 6CuCl2 → 6Cu+2AlCl3