"a pharmacist is checking several icu drips that were made by a technician. the first is a dexmedetomidine drip labeled with a final concentration of 2 mcg/ml. in reviewing the technician's notes and iv room waste, the technician used 2 ml from a dexmedetomidine vial (100 mcg/ml) and added this to 48 ml of ns to prepare a final volume of 50 ml. what is the correct final concentration of this drip in mcg/ml? "