If there are 3 g of sulfur in each 100 g of crude oil, what is the percent composition in regards to sulfur

= 3 %

Explanation:

Percent composition is given by the formula;

= (mass of component/molar mass of compound) * 100%

Therefore in this case;

% composition of sulfur = (mass of sulfur / mass of crude oil) * 100%

we get;

= (3 g / 100 g) * 100%

= 3 %