Calculate the percentage composition of oxygen in calcium trioxocarbonate(IV) [Ca=40, C=12, O=16] by Sunday | Sep 14 | Chemistry JAMB | 0 comments A. 16 B. 48 C. 40 D. 12 Correct Answer: Option B – 48 Users Also Read These:200cm³ of 0.50mol/dm³ solution of calcium hydrogen…In the electrolytic extraction of calcium from…The percentage composition of a hydrocarbon is 79.2…The reaction of hydrochloric acid and calcium…A mixture of calcium chloride and calcium…