What is the percentage by mass of copper in copper in copper (l) oxide (CU2O)? [O = 16; CU =64] by Sunday | 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% Users Also Read These:To obtain pure carbon(ii)oxide from its mixture with…The system of election whereby each political party…An oxide has the following properties. The oxide is?What mass of copper in gram would be deposited by a…Calculate the mass of the copper deposited during…