Assume that a student places 1.0 mol of solid PbI2 in 1.0 L of water. Part of the lead iodide dissolves according to the following reaction PbI2(s) Pb2+ (aq) + 2I-(aq) After allowing the solution to sit for 30 minutes the student determines that the iodide concentration was [I-] = 0.0032 M. What is the Pb2+ concentration?