How many moles of oxygen atoms are present in 5.20 mol of Al₂(SO₄)₃?

Name: How many moles of oxygen atoms are present in 5.20 mol of Al 2 (SO 4 ) 3 ?
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Quizplus · Accepted Answer

The formula given is Al2(SO4)3, which means each formula unit contains 3 sulfate ions (SO4)^2-. Each sulfate ion has 4 oxygen atoms, so in total, there are 3 * 4 = 12 oxygen atoms per formula unit of Al2(SO4)3. For 5.20 moles of Al2(SO4)3, the number of moles of oxygen atoms is 5.20 moles * 12 = 62.4 moles.

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