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CGP EDU Academic Team
Published on: August 14, 2026
The complete combustion of 0.492 g of an organic compound containing 'C', 'H' and 'O' gives 0.793g of CO 2 and 0.442 g of H 2 O. The percentage of oxygen composition in the organic compound is ____________- (nearest integer)
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(46)
Mole of CO 2 = Moles of C = 
Weight of ‘ C ’ = 
x 12 = 0.216 gm
Moles of 'H' = 
x 2
Weight of 'H' = 
x 2 x 1 = 0.049 gm
Weight of 'O'=0.492-0.216-0.049= 0.227 gm
% of ‘ O ’ = 
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