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Hemoglobin, a protein in red blood cells, carries o2 from the lungs to the body's cells. iron (as ferrous ion, fe2+) makes up 0.33 mass % of hemoglobin. if the molar mass of hemoglobin is 6.8 Ã 104 g/mol,
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Hemoglobin, a protein in red blood cells, carries o2 from the lungs to the body's cells. iron (as ferrous ion, fe2+) makes up 0.33 mass % of hemoglobin. if the molar mass of hemoglobin is 6.8 Ã 104 g/mol, how many fe2+ ions are in one molecule?
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John Camerin
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In order to determine the number of Fe ions, we first determine the mass mass of iron present. This is determined using:
Mass of Fe = 0.33% of mass of hemoglobin
Mass of hemoglobin = 6.8 x 10⁴ g/mol
Mass of Fe = 0.0033 * 6.8 x 10⁴
Mass of Fe = 224.4 g/mol
Now, we know that the atomic mass of Fe is 55.85 g/mol
We may determine the mass of iron by the mass of each molecule of ion to determine the number present, which is:
224/55.85 =
4 moles of Fe ions present per mole of hemoglobin
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Maxim Tulupov
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Dec 25, 2018
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Maxim Tulupov
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