Metallic Copper Can Be Obtained from the Mineral Chalcocite (Cu₂S)

question 67

Multiple Choice

Metallic copper can be obtained from the mineral chalcocite (Cu₂S) . What is the mass percent of copper in chalcocite?

• A) 79.85%
• B) 66.46%
• C) 20.15%
• D) 33.54%
• E) 57.47%

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