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Copper Oxide Ore, CuO, Can Be Smelted with Carbon to Make

Question 11

Multiple Choice

Copper oxide ore, CuO, can be smelted with carbon to make copper metal and carbon dioxide.
2CuO(s) + C(s) \rightarrow 2Cu(s) + CO2(g)
If 100.0 of a mixed ore is smelted and produces 75.9 grams of pure copper. What percentage of the mixed ore is CuO? (You can assume the reaction yield is 100%, there is excess carbon, and that CuO is the only source of copper.)


A) 28.0%
B) 48.5%
C) 75.9%
D) 79.9%
E) 95.0%

Correct Answer:

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