The Only Compound Containing Copper in an Ore Is Chalcopyrite,CuFeS₂

question 15

Multiple Choice

The only compound containing copper in an ore is chalcopyrite,CuFeS₂.If a 90.0 g-sample of this ore contains 22.0 % of copper,what is the percentage of CuFeS₂ in the sample?

• A) 24.4%
• B) 6.86%
• C) 0.635%
• D) 57.2%
• E) 42.8%

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Definitions:

Economic Concept

A principle, theory, or idea that forms the basis for economic analysis and decision-making.

Marginal Analysis

An approach in economics that involves examining the consequences of adding to or subtracting from the current situation.

Opportunity Cost

Foregoing the opportunity for advantages from different choices by opting for a specific one.

Monetary Cost

Monetary cost refers to the total amount of money that is spent to purchase goods or services.