Question

A 43.40 mg sample of an alcohol

contains 15.10 mg O, 22.6 mg C, and
the rest is hydrogen. What is its
percent composition of oxygen?

[?] % O

Answer 1

The percentage composition of a given compound is defined as the ratio of the amount of each element to the total amount of individual elements present in the compound multiplied by 100

`(15.1)/(43.4) * 100\%`

= 34.79 %