The percentage by mass of calcium in Ca(OCI)2 is [Ca = 40.0; CI = 35.5; O = 16.0] by Sunday | May 7 | 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:What is the percentage by weight of calcium in…What is the percentage by mass of copper in copper…A sample of hard water contains some calcium…A solution contains 20g of solute in 180g of…A mixture of calcium chloride and calcium…