Find the number of molecules of pain reliever in the standard doses of (a)Tylenol and (b)Advil.?

Manufacturers of headache remedies routinely claim that their own brands are more potent pain relievers than the competing brands. Their way of making the comparison is to compare the number of molecules in the standard dosage. Tylenol uses 325 mg of acetaminophen as the standard dose, while Advil uses 2.00 x 10^2 mg of Ibuprofen.