Aluminum sulfate, Al2(SO4)3,  is a compound used in sewage treatment plants. 1. Select a pair of conversion factors that relate moles of Al to moles of S. 2. Construct a pair of conversion factors that relate moles of S to moles of Al2(SO4)3. 3. How many moles of Al are in a sample of this compound if the sample also contains 0.969 mol S? 4.How many moles of S are in 1.38 mol Al2(SO4)3

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