[" (2) The haemoglobin 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 molectre of hacmoglobin is- "],[[" (1) "3," (2) "4," (3) "2," (4) "6]]

The haemoglobin from the red blood corpuscles of most mammals contains approximately 0.33% of iron by weight. The molecular weight of haemoglobin is 67,200 . The number of iron atoms in each molecule of haemoglobin is (atomic weight of iron =56 ):

Haemoglobin contains 0.33% iron (Fe=56). The molecular weight of haemoglobin is 68000. The number of iron atoms in one molecule of haemoglobin is .

Haemoglobin contains 0.33% of iron by weight. The molecular mass of haemoglobin is about 67200. The number of iron atoms (at. mass of Fe=56) present in one molecule of haemoglobin is: