(a) Find the number of molecules of pain reliever in the standard dose of Tyleno
ID: 2241897 • Letter: #
Question
(a) Find the number of molecules of pain reliever in the standard dose of Tylenol.
(b) Find the number of molecules of pain reliever in the standard dose of Advil.
***** I keep getting A) 1.21x10^21 B) 6.42 x 10^20 It saids its wrong.. Please show your work.
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 3.06 times 102 mg of acetaminophen (C8H9NO2) as the standard dose, while Advil uses 2.20 times 102 mg of ibuprofen (C13H18O2) Find the number of molecules of pain reliever in the standard dose of Tylenol. Find the number of molecules of pain reliever in the standard dose of Advil.Explanation / Answer
a) molecular mass of acetaminophen (C8H9NO2) is 151.162598 and hence in 306mg it contains
(.306/151.162598)*6.023*10^23 = 1.22*10^21 molecules.
b) similarly we get for advil = 6.41*10^20 molecules.
I have searches the internet and it is also saying that the answer is correct. May be from where you are checking is not giving the correct answer.
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