Question

Cu(NO3)2-Zn(NO3)2-Al(No3)2-MgNO3)2

Answer 1

3Zn(NO3)2 + 2Al = 2Al(NO3)3 + 3Zn

Answer 2

Cu(NO₃)₂+Zn=Zn(NO₃)₂+Cu↓

3Zn(NO₃)₂+2Al=2Al(NO₃)₃+3Zn↓

2Al(NO₃)₃+3Mg=3Mg(NO₃)₂+2Al↓