A nurse is preparing to administer chlorpromazine hydrochloride 40 mg IM to a client who has anorexia nervosa. Available is chlorpromazine hydrochloride injection 25 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Step-by-Step Calculation Understanding the Problem Desired dose: 40 mg of chlorpromazine hydrochloride Available concentration: 25 mg/mL Calculations Calculate the volume to administer: Volume (mL) = Desired dose (mg) / Concentration (mg/mL) Volume = 40 mg / 25 mg/mL = 1.6 mL The nurse should administer 1.6 mL of chlorpromazine hydrochloride.