What is the percentage by mass of copper in copper in copper (l) oxide (CU2O)? [O = 16; CU =64] - SchoolNGR

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What is the percentage by mass of copper in copper in copper (l) oxide (CU2O)? [O = 16; ...

What is the percentage by mass of copper in copper in copper (l) oxide (CU₂O)? [O = 16; CU =64]

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A 88.9%
B 80.0%
C 66.7%
D 20.0%
E 11.1%

Correct Answer: Option A

Explanation:

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