Haemoglobin contain 0.25% Fe by mass.The molecular mass of haemoglobin is 89600 calculate the number of Fe atoms per molecule
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Percentage of iron=0.25%
100gm of haemoglobin has 0.25gm of iron.
89600 have 89600×1000.25=224 gm
The atomic weight of Fe =56
No. of moles present =56224=4
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