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A 0.534 g of a sample of haemoglobin on ...

A `0.534 g` of a sample of haemoglobin on analysis was found to contain `0.34% Fe`. If each haemoglobin molecule has four `Fe^(2+)` ions, what is the molecular mass of haemoglobin ? `(Fe = 56 "amu")`

Text Solution

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`100 g` of haemoglobin contains `= 0.34 g of Fe`
1 mol of haemoglobin contains `= Fe^(2+)` ions
`= 4 xx 56 g = 224 g`
`:. 0.34 g of Fe` is present in `100 g` of Haemoglobin
`224 g of Fe` is present in `= (100 xx 224)/(0.34) = 65882.4 g`
`Mw` of haemoglobin `= 65882.4 g`
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