posted by lauren .
Complete and balance the precipitation reactions. Include physical states in your equations.
Ba(NO3)2(aq) + CuSO4 (aq)--->
Didn't I do this for you a couple days ago? You need to know the solubility rules. Here is a simplified set.
The first one is done this way.
Ba(NO3)2(aq) + CuSO4((aq) ==> BaSO4(s) + Cu(NO3)2(aq)