Percentage of Carbon & Hydrogen in B6 Sample?

B

Bernard L

New member
Question on past exam paper. 550 mg sample of vitamin B6 was burned completely in presence of Oxygen. 1145mg of CO2 and 322mg of H2O were produced. A kjedahl analysis was also carried out and the sample was found to contain 8.30% Nitrogen.

What is the percentage Carbon and Hydrogen in the Vit B6 sample?

If Molar mass of B6 is 169 g/mol calculate molecular formula for this organic compound.

How do I do this?

Thanks
 
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