Question

What is the mass percent of carbon in carbon dioxide?
(i) 0.034%
(ii) 27.27%
(iii) 3.4%
(iv) 28.7%

Answer 1

Mass percent of carbon in carbon dioxide is 28.7%
That is (4).....

Hope this may help uu................

Answer 2

The  mass of CO2 is 44 then divide Carbon's mass by that number which equals 27%