What is the percentage by mass of copper in copper (1) oxide \(\left(\mathrm{Cu}_{2} \mathrm{O}\right) ?[0=16, \mathrm{Cu}=64]\) - SchoolNGR

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What is the percentage by mass of copper in copper (1) oxide \(\left(\mathrm{Cu}_{2} ...

What is the percentage by mass of copper in copper (1) oxide \(\left(\mathrm{Cu}_{2} \mathrm{O}\right) ?[0=16, \mathrm{Cu}=64]\)

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A \(88.9 \%\)
B \(80.0 \%\)
C \(66.7 \%\)
D \(20.0 \%\)

Correct Answer: Option A

Explanation:

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