A 10.231-g sample of window cleaner containing ammonia was diluted with 39.466 g of water. Then 4.373

Question:

A 10.231-g sample of window cleaner containing ammonia was diluted with 39.466 g of water. Then 4.373 g of solution were titrated with 14.22 mL of 0.1063 M HCl to reach a bromocresol green end point. Find the weight percent of NH3 (FM 17.031) in the cleaner.