A 7 7 19. Under wha 50-184 P D (6pt) When zinc chloride (ZnCl2) reacts with NH, solution, a white crystalline compound Zn(NH₁),Cl₂ produced. A student used the same procedure as the one you used to analyze Ni(NH,),Cl, to determine the mass percent of NH, in Zn(NH3),Cl₂. The student added 25.00 ml of 0.2500 M HCI solution to an aqueous solution Containing 0.3146 g of Zn(NH),Cl₂. The excess HCI required 25.60 ml of 0.1000 M NaOH solution for omplete titration. Calculate the mass percent of NH, in Zn(NH),Cl₂ based on the student's data.