A 4.91 g sample of aluminum completely reacts with oxygen to form 6.85 g of aluminum oxide. Use this data to calculate the mass percent composition of aluminum in aluminum oxide.
i got 61.2% first and it was wrong. then i got 53.0% and it was wrong
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i got the answer. thanks anyways!
You didn't get the right answer using those numbers did you? 4.91 g Al should form more than 6.85 g Al2O3.
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