a An analyst has 1 liter of 25 mg/mL stock solution of some analyte. To prepare a new solution containing 7.5 mg/mL of the analyte, they could add of stock solution to volumetric flask and dilute to the mark with water. C 7 ml, 25 mL 25 mL, 100-ml 15 mL, 50-ml 100 mL, 250-ml