If 1.00 g of an unknown molecular compound contains 8.35 × 10²¹ molecules,what is its molar mass?

Question

Quizplus · Accepted Answer

To find the molar mass, use the formula: Molar mass = (mass of sample in grams / number of moles). First, calculate the number of moles using Avogadro's number (6.022 × 10^23 molecules/mol): (8.35 × 10^21 molecules) / (6.022 × 10^23 molecules/mol) = 0.01386 mol. Then, Molar mass = 1.00 g / 0.01386 mol = 72.1 g/mol.

If 100 G of an Unknown Molecular Compound Contains 8