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

by | Aug 22 | Chemistry WAEC | 0 comments

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

Correct Answer:

Option A – 88.9%

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