Question

Haemoglobin contains 0.25% Fe by weight . If one molecule of haemoglobin contains 4 atoms of Fe , find the molecular mass of haemoglobin .

Answer 1

Explanation:

Weight of 4 atoms of iron(Fe) =>4× 55.845 g

=>223.38 g. It is given that haemoglobin contains 0.25% Fe by weight. Let's take the molecular weight of haemoglobin to be x.

$\frac{0.25}{100} = \frac{223.38}{x} = > \frac{25}{100 \times 100} = \frac{223.38}{x} = >$

$\frac{1}{400} = \frac{223.38}{x} = > x = 223.38 \times 400 =$

$= > x = 89352 \: grams$

The molecular weight of Haemoglobin is 89352 grams. Hope it helps you.