The label on an old bottle of a solid reagent reads, "ferric chloride hexahydrate, fecl3 · 6h2o." an ap chem lab team is assigned to determine the purity of the bottle's contents. the students dissolve 1.000 g of the salt in a small amount of distilled water and then add an excess of 1.0 m silver nitrate, agno3, to precipitate all of the chloride ion as agcl. the balanced equation for the precipitation reaction is: fecl3(aq) + 3 agno3(aq) + 3agcl(s) + fe(no3)3(aq) if the ferric chloride is 90.0% pure, which of the following would correctly give the mass of silver chloride that is expected to form? note: all units have been omitted from the options, as have numerical values of 1, 1.0, 1.000, etc.