One way the u. s. environmental protection agency (epa) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. any chloride anions in solution will combine with the silver cations to produce bright white silver chloride precipitate. suppose an epa chemist tests a 200.ml sample of groundwater known to be contaminated with copper(ii) chloride, which would react with silver nitrate solution like this: cucl2 (aq) + 2agno3 (aq) → 2agcl (s) + cuno32 (aq) the chemist adds 26.0m m silver nitrate solution to the sample until silver chloride stops forming. she then washes, dries, and weighs the precipitate. she finds she has collected 6.1mg of silver chloride. calculate the concentration of copper(ii) chloride contaminant in the original groundwater sample. be sure your answer has the correct number of significant digits.

The concentration of copper chloride in the water sample is 0.109 mM.

The reaction of copper chloride with silver nitrate is as follows;

The amount of copper chloride required is half the concentration of Silver chloride.

The concentration of AgCl in the sample is;

Moles of AgCl =

Moles  of AgCl =

Moles of AgCl = 0.0425 mmoles

Moles of Copper chloride required to produce 0.0425 moles of AgCl :

=

= mmoles

= 0.0218 mmoles.

The concentration of Copper chloride in 200 ml of sample:

=

= 0.0218 mM

= 0.109 mM.

The concentration of Copper chloride in the water sample is 0.109 mM.

For more information about concentration, refer to the link:

link

c)red bank

explanation:

red bank is a borough in monmouth county, new jersey, incorporated in 1908 and located on the navesink river, the area's original transportation route to the ocean and other ports.

14 days is the half-life of phosphorus-32