A 21.004 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 76.730 g of water. A 14.045 g aliquot of this solution is then titrated with 0.1043 M HCl. It required 29.18 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous waste.