The element thallium is used as a pesticide. A common source of toxic exposure to thallium is via ingestion of pesticide-contaminated food. You want to determine the toxicity of thallium ion (Tl+) in an agricultural
wastewater sample. To 50.00 L of wastewater, you add sodium chloride and recover 9.12 mg of solid thallium chloride. If toxic concentrations of thallium are 1 μg/L, is this sample of wastewater considered toxic?

A. Write the net ionic equation corresponding to the reaction that occurs when sodium chloride is added to the wastewater sample.

B. Briefly list useful information, steps/plan for solving the problem, and/or what you need to calculate to
reach a final answer.

C. Solve the problem, using clear dimensional analysis steps. Confirm that explicit units are clearly expressed on all calculations and on your final answer.