The following pairs of soluble solutions can be mixed. In some cases, this leads to the formation of an insoluble precipitate. Decide, in each case, whether or not an insoluble precipitate is formed.
CaCl2 and NH4CO3
Mg(NO3)2 and Ag2SO4
Na2CO3 and MnCl2
Li2S and MnBr2
NaCl and K3PO4