SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Calculate the number of moles of Aluminum in a 2.04 mole sample of aluminum oxide, Al2O3.
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2.04 moles
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4.08 moles
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6.12 moles
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1.02 moles
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Explanation:
Detailed explanation-1: -The mole ratio of Al to Al2O3 is 4:2. Use this mole ratio for the stoichiometry conversion.
Detailed explanation-2: -1 Expert Answer 4:3 is the mole ratio of aluminum to oxygen gas.
Detailed explanation-3: -Molecular weight of Al2O3=102g. Weight of Al in Al2O3=2×27=54g. Amount of Al in 102g of Al2O3=54g. Amount of Al in 9000g of Al2O3=10254×9000=4764. 7g.
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