Question

The red colour of blood is due to a compound called "haemoglobin". I contains 0.335 % of iron. Four atoms of iron are present in one molecule of haemoglobin. What is its molecular weight?

Answer 1

Answer:

Hemoglobin contains 4 Fe atoms so basically 55.85 atomic mass of

Fe*4=223.4 a.m.u

so its 0.335% of 223.4 will give us the molar mass of hemoglobin.

(4*Fe atomic mass)/molar mass of hemoglobin=0.335%

223.4/molar mass of hemoglobin=0.00335

molar mass of hemoglobin=66687(66,687)g

Answer 2

Hey Dear,

◆ Answer -

Hb = 66687 amu

◆ Explaination -

Hemoglobin contains 4 Fe atoms. Weight of iron will thus be -

Wi = 4 × Fe

Wi = 4 × 55.85

Wi = 223.4 g

Given that this is equal to 0.335 % of hemoglobin.

Wi = 0.335/100 × Hb

Hb = 223.4 × 100 / 0.335

Hb = 66687 amu

Therefore, molar weight of Hb is 66687 amu.

Thanks dear.