suppose an epa chemist tests a 200 ml sample of groundwater known to be contaminated with iron(iii) chloride, which would react with silver nitrate solution like this:
fecl3(aq) +3agn)3 (aq) =3agcl (s) fe(no3)3 (aq)
the chemist adds a 59.0mm silver nitrate solution to the sample until silver chloride stops forming. she then washes, dries, and weighs the precipitate. she finds she has collected 4.3 mg of silver chloride.
calculate the concentration of iron chloride containment in the original groundwater