A chemist prepares a solution of mercury(II) iodide (HgI₂) by measuring out 0.00181μmol of mercury(II) iodide into a 350 . mL volumetric fiask and filling the flask to the mark with water. Calculate. a) 1.65 × 10⁻⁶ M b) 2.05 × 10⁻⁶ M c) 2.45 × 10⁻⁶ M d) 2.85 × 10⁻⁶ M