C : 52.2%, H : 13.1%, O:34.7%
Further explanation
The empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
(empirical formula) n = molecular formula
11.5 g of Ethanol-C₂H₅OH contains 6.00 g of Carbon and 1.51 g of Hydrogen.
mass of Oxygen :
[tex]\tt 11.5-(6+1.51)=4~g[/tex]
Percent composition :
[tex]\tt \dfrac{6}{11.5}\times 100\%=52.2\%[/tex]
[tex]\tt \dfrac{1.51}{11.5}\times 100\%=13.1\%[/tex]
[tex]\tt \dfrac{4}{11.5}\times 100\5=34.7\%[/tex]
