Predict the product that would result from the reaction of the following. Balance each equation you write: a) Combination:Ca(s)+S(s)-->_________; b) Decomposition:PbO2(s)-->_____ + ______; c) Single replacement:Kl(s)+Cl2(g)-->_____ +_____; d) Double replacement:CuCl2(aq)+Na2S(aq)-->___+___.