Question

mass percentage of carbon in carbon dioxide??

Answer 1

Heya!!     C = 12.01/44.01 = 0.2729= 27.29% (we will divide 0.2729 with 100 to take the percentage).   = 32.00/44.01 =0.7271 =72.71 %O in CO2.    Hope it helps

Answer 2

mass% of C in co2=12÷12+32×100
27.27%