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

question 65

Multiple Choice

The only compound containing copper in an ore is chalcopyrite,CuFeS₂.If a 91.0 g-sample of this ore contains 15.0 % of copper,what is the percentage of CuFeS₂ in the sample?

• A) 16.5%
• B) 4.73%
• C) 0.433%
• D) 39.4%
• E) 60.6%

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Definitions:

Synaptic Function

The process by which neurons communicate with each other across synapses, involving the release and detection of neurotransmitters.

Neuronal Sensitivity

The responsiveness of neurons to various stimuli, determining how strongly they react to signals.

Formation of Synapses

The process by which neurons connect with each other to form synapses, enabling communication within the brain.

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Edible seeds of pine trees, often used in cooking and baking for their unique, slightly sweet flavor.