How to Calculate the Percentage Composition of a Compound?

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A simple of an unknown with plants decomposition of the sample produces 0.09. 48 G of C , 0.1264 g of O and 0.0158 g of H . What is the % composition of the compound ?
 
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donniemsb_12 said:
A simple of an unknown with plants decomposition of the sample produces 0.09. 48 G of C , 0.1264 g of O and 0.0158 g of H . What is the % composition of the compound ?

Looks to me like there is not enough information - are you told whether the original substance contains oxygen, or not?
 
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