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A decapeptide (mol. wt. 796) on complete...

A decapeptide (mol. wt. 796) on complete hydrolysis gives glycine (mol. wt. 75), alanine and phenylalanine .Glycine contributes 47.0% to the total weight of the hýdrolyzed products. The number of glycine units present in the decapeptide is

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The correct Answer is:
6
`-overset(O)overset(||)C-NH - overset(H_2O) to - overset(O)overset(||) C - OH + NH_2^(-)`
Let n glycine units be present in the compound , then the the total weight of the product will be `796+9 xx 18 = 958` ( since there are 9 water molecules )
Percent weight of glycine in the given weight of product
`(75 n)/(958) xx 100 = 47% implies n=6`
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