How many moles and how many atoms of zinc are in a sample weighing 34.9 g? A)0)533 mol,8.85 ×10^-25 atoms B)0)533 mol,3.21 ×10²³ atoms C)1)87 mol,3.10 × 10^-2⁴ atoms D)1)87 mol,1.13 × 10²⁴ atoms

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Quizplus · Accepted Answer

The molar mass of zinc is approximately 65.38 g/mol. Therefore, 34.9 g of zinc is 0.533 mol (34.9 g / 65.38 g/mol). The number of atoms is calculated by multiplying the moles by Avogadro's number (6.022 × 10^23 atoms/mol), resulting in approximately 3.21 × 10^23 atoms.

How Many Moles and How Many Atoms of Zinc Are