1 Answer

David Carlisle · Answer 1 · 2021-11-24T19:15:55+0000

C : 52.2%, H : 13.1%, O:34.7%

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 :

$\tt 11.5-(6+1.51)=4~g$

Percent composition :

$\tt (6)/(11.5)* 100\%=52.2\%$

$\tt (1.51)/(11.5)* 100\%=13.1\%$

$\tt (4)/(11.5)* 100\5=34.7\%$

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