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The haemoglobin from red blood corpuscles of most mammals contains approximately 0.33% of iron by mass. The molecular mass of haemoglobin is 67200. The number of iron atoms in each molecular of heamoglobin is [Given : Atomic mass of Fe = 56 g/mol] Report your answer by rounding it upto nearest whole number.

Correct answer

4

Step-by-step solution

100 g Haemoglobin = 0.33 g Fe 67200 g Haemoglobin = 0.33 × 67200 100 = 221.76 Number of iron atoms per molecules of haemoglobin = 221.76 56 = 4

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