Problem

(a) One molecule of the antibiotic penicillin G has a mass of 5.342 × 10-21 g. What is the...

(a) One molecule of the antibiotic penicillin G has a mass of 5.342 × 10-21 g. What is the molar mass of penicillin G?


(b) Hemoglobin, the oxygen-carrying protein in red blood cells, has four iron atoms per molecule and contains 0.340% iron by mass. Calculate the molar mass of hemoglobin.

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