Drugs like fentanyl are oftentimes administered through injection. How many milliliters of a 1.0 micromolar (M) fentanyl solution should be administered to a 60 kg adult? The molecular formula for fentanyl is C22H28N2O. 4c) Drug toxicity is generally discussed in terms of LD50, where LD50 represents the dose of a drug in which 50% of rodents given the dose would die. The LD50 value for heroine (C21H23NO5) is 223 mg/kg while the LD50 value for fentanyl is 3.0 mg/kg. Determine the volume (in mL) associated with a toxic dose for a 1.010-3 M solution of fentanyl administered to a 60 kg adult