Question

Hemoglobin contains 0.334 % of iron my weight. Molecular weight of hemoglobin is approximately 67200. The number of iron atom present in one molecule of haemoglobin is

Answer 1

"100 g haemoglobin contains 0.334 g iron

then, 67200 g haemoglobin contains =224.44 g iron.

Now , 56 g iron contains=6.023 * pow(10,23) atoms of iron

then 244.44g contains =26.3*pow(10,23) atoms of iron.

now , 6.022*pow(10,23) molecules of haemoglobin=26.3*pow(10,23) atoms of iron

(since 67200g 0f haemoglobin =6.022*pow(10,23)moleculesof haemoglobin)

then, 1 molecule of haemoglobin contains= 4atoms of iron ."

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