Another chemistry question you might want to answer. :D?

Question

The molecular weight of hemoglobin is 65,000 g/ml. Hemoglobin contains 0.35% Fe by mass. How many iron atoms are in hemoglobin?

Answer 1

You mean g/mol

65,000 x 0.0035 = mass units of Fe in haemoglobin (from the question), and each Fe atom accounts for about 56 mass units.