Question

What percentage of oxygen is present in the compound $CaC{O}_3\cdot 3C{a}_3{\left(P{O}_4\right)}_2$?

• A. 23.3%
• B. 45.36%
• C. 41.94%
• D. 17.08%

Answer 1

Answer: (C)

% of $O=\frac{16\times 27}{\left(100+3\times 310\right)}\times 100=41.94\%$