You dissolve the tablet in hydrochloric acid and filter off insoluble material. An antacid tablet has calcium carbonate as the active ingredient; other ingredients include a starch binder. Suppose you add potassium oxalate to the filtrate which is having the calcium ion to precipitate calcium oxalate. If a tablet weighing 0.680 g gave0.6332 g of calcium oxalate, determine the mass percentage of active ingredient in the tablet?