AP Chemistrymediummcq1 pt
How many grams of aluminum are contained in 4.50 mol of aluminum oxide, Al₂O₃?
A.243 g
B.121 g
C.459 g
D.60.7 g
Explanation
Core Concept
Each mole of Al₂O₃ carries two moles of aluminum atoms, so the sample holds 9.00 mol of Al. Multiplying by the atomic mass gives 9.00 × 26.98 = 243 g. Converting compound moles to element moles through the subscript is the step that decides the answer.
Correct Answer
A243 g
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