What is the molar mass of aspirin if 5.19 × 10¹⁶ molecules of aspirin weigh 15.53 μg?

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Quizplus · Accepted Answer

The molar mass of aspirin can be calculated using the given number of molecules and the weight. First, convert the number of molecules to moles using Avogadro's number (6.022 × 10^23 molecules/mol). Then, use the formula: Molar mass = mass in grams / moles. Given 5.19 × 10^16 molecules and 15.53 μg (which is 15.53 × 10^-6 g), the calculation leads to a molar mass of approximately 180 g/mol.

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