Lovastatin (C24H36O5) has a molar mass of 404.53 g/m. The normal dose of the drug lovastain is 20mg. How many molecules of lovastatin (C24H36O5) are in a normal dose?

Answer 1

How many moles are there in 20 mg?
0.020 grams/molar mass = moles lovastatin.
Now convert moles to molecules remembering that there are 6.022E23 molecules in 1 mole.