please show all work

a without precio precipitate? 3. The wastewater from a small medical clinic contains levels of Barium ion at approximately 200 mg/L. Before discharging to the sewer system, the barium level must be reduced to 10 mg/L. a. Consulting the appendix in your textbook, choose the two anions with the lowest Ksp values. Which one of these will be the most effective in removing the barium from the wastewater? Show your work. b. Choose a cheap, non-toxic, soluble salt of the most effective anion you chose in 3a above. Group I and II elements, such as sodium, potassium, or calcium are usually good choices as cations, if they are soluble. Assuming that the clinic has a full, 250-gal tank for wastewater, what mass of your salt will be required to reduce the silver concentration from 200 to 10 mg/L? Show your work