A 3.9336 g mixture sample of BaCl2.2H2O (244.26g/mol) and KCl (74.55g/mol) was dissolved in water and diluted to 500.00 mL. A 25.00 mL of the solution is titrated with 0.1250 M AgNO3 with K2CrO4 as an indicator. The titration is completed with 16.00 mL of AgNO3 solution
(a) Calculate the weight percent of KCl in the original sample.
(b) Calculate the weight of this sample after heating at 140oC for 2 hours. Assume all water is evaporated