Question

A 43.40 mg sample of an alcohol contains 15.10 mg O, 22.6 mg C, and the rest is hydrogen. What its percent composition of carbon.

? % C

Answer 1

The alcohol contains 15.10 mg O, and 22.6 mg C, and the rest is hydrogen. 15.10 / 43.40 = 37.49 %. Therefore, the percent composition of oxygen is 37.49 %.