An impure sample consisits of barium chloride dihydrate, potassium nitrate, and sodium chloride. In order to determine the composition of the sample, the following analysis was carried out: A 0.9146g sample of the mixture was weighed and placed in a 110 degrees C oven for 2 hours. When dried completely, the sample weighed 0.8468g. A second sample weighing 0.6395g was dissolved in water and an excess of silver nitrate added. The resulting solid, after filtering and drying, weighed 1.0573g.
A) Calculate the % of each salt present in the impure sample.
B) If the silver nitrate solution added in the second part has a concentration of 0.25M, what volume must be added in order to insure a 10% excess?