1 Answer

Sysuser · Answer 1 · 2021-06-09T02:40:07+0000

The molecular formula : C₄H₈O₂

Maybe a compound is 54.5% carbon, 9.1% hydrogen and 36.4% oxygen,so :

mol C :

$\tt (54.5)/(12)=4.54$

mol H :

$\tt (9.1)/(1)=9.1$

mol O :

$\tt (36.4)/(16)=2.28$

Divide by 2.28(the smallest ratio) :

C H : O =

$\tt (4.54)/(2.28)/ (9.1)/(2.28)/ (2.28)/(2.28)=2/ 4/ 1$

The empirical formula : C₂H₄O

(The empirical formula)n=molecular formula

(2.12+4.1+16)n=88

(44)n=88⇒n=2

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