(a) How would you prepare a saturated aqueous solution of copper(I) iodide at 25 °C?

(b) What is the mass in milligrams of CuI in 400.0 mL of the saturated solution?

(c) Suppose you add some CuI^* to this saturated solution, where I^* is a radioactive form of iodide ion. A student says, “Because the solution is already saturated, the added CuI* won’t dissolve and there’s no danger of getting any radioactive iodide ion in solution.” What is wrong with his thinking?