Question

An organic compound contains carbon, hydrogen and oxygen. Its elemental analysis gave C = 40%
and H = 6.66%. The empirical formula of the compound would be
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Answer 1

Here is your answer

A)Element:- Carbon(C)

%Composition:-40.00%

Atomic mass:- 12

Mole ratio:- (40/12)

Simple ratio:- (3.33/3.33)=1

B)Element:- Hydrogen(H)

%Composition:-6.66%

Atomic mass:- 1

Mole ratio:- (6.67/1)

Simple ratio:- (6.667/3.33)=2

C)Element:- Oxygen(O)

%Composition:-53.33%

Atomic mass:-16

Mole ratio:-(53.33/16)

Simple ratio:- (3.33/3.33)=1

∴ Formula of compound is =CH2O

hope it's helpful