What is the percentage by weight of calcium in Ca(OCI)2? [Ca = 40, Cl = 35.5, O = 16] By: Sunday|Published on: May 9|Categories: Chemistry WAEC| 0 comments A. 28.0% B. 31.6% C. 43.8% D. 44.5% Correct Answer: Option A A. 28.0% Users Also Read These:A calcium atom and a calcium ion have the same?In the electrolytic extraction of calcium from…Calcium atom ionizes by?A fresh garden soil sample weighed 25kg. When…Calculate the percentage by mass of nitrogen in…SEE ALSO Which of the following compounds can be represented by the molecular formula C2H6O?