Hemoglobin contains 0.33% of iron by weight. The molecular weight of hemoglobin is approximately 67200. The number of iron atoms (At. wt. of Fe = 56) present inone molecule of hemoglobin is

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answer is B.

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Detailed Solution

∵100gHb contains =0.33gFe∴ 67200gHb=67200×0.33100gFe Number of atom of Fe=672×0.3356=4

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