If a sample of a compound of carbon and oxygen contains 3.00g of carbon and 8.00g of oxygen, what is the mass percent of carbon in the compound?

A. 27.3%
B. 25.0%
C. 37.5%
D. 3.67%
E. 2.67%

2 answers

%anything =(mass component/total mass)*100 = ??
37.5 right