How many molecules of aspirin (C₉H₈O₄) are present in 41.40 g of aspirin?

Question

Quizplus · Accepted Answer

To find the number of molecules in a given mass of a substance, you first need to calculate the molar mass of aspirin (C9H8O4), which is approximately 180.16 g/mol. Then, use the formula: number of moles = mass / molar mass. For 41.40 g of aspirin, the number of moles is 41.40 g / 180.16 g/mol ≈ 0.230 moles. Finally, to find the number of molecules, multiply the number of moles by Avogadro's number (6.022 x 10^23 molecules/mol), resulting in approximately 1.383 x 10^23 molecules.

How Many Molecules of Aspirin (C9H8O4) Are Present in 41

How Many Molecules of Aspirin (C₉H₈O₄) Are Present in 41