A 200 G a Sample Is Composed of a Mixture of of Fe₂O₃

question 13

Multiple Choice

A 20.0 g a sample is composed of a mixture of Fe₂O₃ and Fe₃O₄. The mixture is found to contain 14.45 g of iron. What percent of the sample is Fe₂O₃?

• A) 2%
• B) 22%
• C) 50%
• D) 72%
• E) 98%

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Definitions:

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A behavioral phenomenon where an individual or group continues to invest in a decision despite evidence of its failure, often because of the resources already committed.

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