What is the full net ionic equation for each reaction? do they form a precipitate or have a color change?

CuSO4+AgNO3
CuSO4+BaCl2
CuSO4+Cu(NO3)2
CuSO4+Pb(NO3)2
CuSO4+KI
CuSO4+Na2S2O3
AgNO3+BaCl2
AgNO3+Cu(NO3)2
AgNO3+Pb(NO3)2
AgNO3+KI
AgNO3+Na2S2O3
BaCl2+Cu(NO3)2
BaCl2+Pb(NO3)2
BaCl2+KI
BaCl2+Na2S2O3
Cu(NO3)2+Pb(NO3)2
Cu(NO3)2+KI
Cu(NO3)2+Na2S2O3
Pb(NO3)2+KI
Pb(NO3)2+Na2S2O3
KI+Na2S2O3

Answered above. You need to show some effort and/or explain exactly what you don't understand about the exercise. We may show you how to do one but not twenty.

CuSo4+BaCl

Na2S2O3 + BaCl2