Help with Chem Questions

1) Write net ionic equations for the following precipitation reactions.
a) 2KI(aq) + Pb(NO3)2(aq) --> PbI2(s) + 2KNO3(aq)

b) Ba(NO3)2(aq) + Na2SO4(aq) --> BaSO4(s) + 2NaNO3(aq)

2) Consider the following pairs fo reactants which will be mixed in solution. If the products include a precipitate, write the balanced chemical equation for the reaction (including all subscripts). If no precipitate will form write "no precipitate" after the reaction arrow. (8 marks)

a) K2S(aq) + CaBr2(aq)

b) KOH(aq) + BaCl2(aq)

c) Na3PO4(aq) + AgNO3(aq)

Thanks for the help!!

1) Write net ionic equations for the following precipitation reactions.
a) Pb2+ + 2I- --> PbI2(s)
b) Ba2+ + SO4^2- --> BaSO4(s)

2) Consider the following pairs...

a) K2S(aq) + CaBr2(aq) --> CaS(s) + 2KBr(aq)

b) KOH(aq) + BaCl2(aq) --> No reaction, although Ba(OH)2 is not very soluble in water

c) Na3PO4(aq) + 3AgNO3(aq) --> Ag3PO4(s) + 3NaNO3(aq)