Calculate the number of oxygen atoms in 29.34 g of sodium sulfate, Na₂SO₄. A) 1.244 * 10²³ O atoms B) 4.976 * 10²³ O atoms C) 2.409 *10²⁴ O atoms D) 2.915 * 10²⁴ O atoms E) 1.166 * 10²⁵ O atoms

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Quizplus · Accepted Answer

First, calculate the moles of Na2SO4: Molar mass = 142.04 g/mol. Moles = 29.34 g / 142.04 g/mol = 0.2065 mol. Each Na2SO4 has 4 O atoms, so moles of O = 0.2065 mol * 4 = 0.826 mol. Number of O atoms = 0.826 mol * 6.022 * 10^23 atoms/mol = 4.976 * 10^23 O atoms.

Calculate the Number of Oxygen Atoms in 29