Calculating weight of sample?

50.0 mL of a solution containing 0.200 BaCl2.2H2O is mixed with 50.0 mL of a solution containing 0.300 g NaIO3 to produce a precipitate of Ba(IO3)2. uming the precipitate has negligible solubility, determine (a) the weight of Ba(IO3)2 produced and (b) the weight of the unreacted BaCl2.2H2O remaining in the solution.