Tylenol is a common painkiller containing 325 mg acetaminophen (C₈H₉NO₂). Advil is another common painkiller containing 200 mg of ibuprofen (C₁₃H₁₈O₂). The ratio of the number of molecules in Tylenol to that in Advil is

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The ratio of the number of molecules in Tylenol to that in Advil is equal to the ratio of their molar masses multiplied by the ratio of their masses. The molar mass of acetaminophen is 151.16 g/mol, and the molar mass of ibuprofen is 206.28 g/mol. The mass of acetaminophen in Tylenol is 325 mg, and the mass of ibuprofen in Advil is 200 mg. Therefore, the ratio of the number of molecules in Tylenol to that in Advil is:(151.16 g/mol / 206.28 g/mol) * (325 mg / 200 mg) = 2.22

Tylenol Is a Common Painkiller Containing 325 Mg Acetaminophen (C8H9NO2)

Tylenol Is a Common Painkiller Containing 325 Mg Acetaminophen (C₈H₉NO₂)