In order to accommodate the range of possible [Cu2] concentrations that may be obtained by dissolving brass, it’s recommended that the calibrarion curve extended from approximately 0.05 M to 0.4 M. Calculate the volumes of 0.40 M Copper (II) nitrate stock solution and water required to prepare 4.0 mL of thr following standard solutions for your calibrarion curve 0.0050 M, 0.10 M, 0.20 M, 0.40 M.