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3. A 800.0 mg sample of solid lead(II) iodide (Ksp = 9.8x10^-9) is dissolved in 5.0 L of pure water (at 25 degrees C). How much hydroiodic acid, a strong acid, must be added to the solution (in g to two decimal places) to begin precipitating lead(II) iodide out of solution? (ignore volume changes by addition solutes)