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

what are the statements

answer7,570,82356 cubic centimeters;

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.