Question

The red colour of blood is due to a
compound called "haemoglobin". It
contains 0.335 % of iron. Four atoms
of iron are present in one molecule of
haemoglobin. What is its molecular
weight? (At. mass : Fe 55.84)
(Ans.: 66674.6 g/mol)​

Answer 1

Answer:

mass of Fe in haemoglobin = 4 x 55.84 g/mol = 223.36 g/mol

0.335% of haemoglobin = 223.36g/mol  

0.00335 x haemoglobin = 223.36g/mol  

haemoglobin weight= 223.36/0.00335 = 66674.6g/mol