The chemical formula of a salt A, is written FexCly. ZH2O. A sample of this salt of 0.5 grams was dissolved in water. The resulting solution was poured into a chemical beaker containing silver nitrate. The precipitate formed, AgCl, was collected, dried and weighed, AgNO3 Calculate a) the number of moles of precipitate. AgCl, when it is known that its mass is 0.718 grams; b) the number of moles of chloride contained in 0.5 grams of compound A; c) the mass in grams of chloride ions present in 0.5 grams of compound A. ii. By dissolving in water a sample of 0.5 grams of the above compound A 25 ml of solution was obtained, which was then titrated with 25 ml of 0.02 M KMnO4 solution. The reaction that occurs in this case is as follows: MnO4 + 5Fe2 + + 8H → → Mn2 + + 5 Fe3 + + 4H20 Count: a) the number of MnO4 'moles that have entered the reaction; b) the mass in grams of Fe2 + ions in the sample; c) the number of moles of Fe2 + ions in it: d) the mass of water in 0.5 grams of compound A; e) the number of moles of water contained in 0.5 grams of compound A: f) the values of x, y and z in the chemical formula of compound A.