Haemoglobin contains $0.33 \%$ of iron by weight. The molecular weight of haemoglobin is approximately 67200…
Haemoglobin contains $0.33 \%$ of iron by weight. The molecular weight of haemoglobin is approximately 67200 . The number of iron atoms (at. wt. of $\mathrm{Fe}=56$ ) present in one molecule of haemoglobin is
6
1
2
4
Solution
Weight of Iron in $67200=\frac{0.33}{100} \times 67200=221.76$
Number of atoms of Iron $=\frac{221.76}{56}=3.96 \equiv 4$
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