Question

Myoglobin stores oxygen for metabolic processes in

muscle. Chemical analysis shows that it contains
0.34 percent Fe by mass. What is the molar mass of
myoglobin? (There is one Fe atom per molecule.)

Answer 1

16,426.47 g/mol is the molar mass of myoglobin.

Step-by-step explanation:

Percentage of iron in myoglobin = 0.34%

Molar mass of iron = 55.85 g/mol

Number of iron atom per molecule = 1

Molar mass of myoglobin = M

`\% \text{of iron}=\frac{\text{Mass of iron}}{\text{Molar mass of myoglobin }}* 100`

`0.34 \%=(55.85 g/mol)/(M)* 100=16,426.47g/mol`

16,426.47 g/mol is the molar mass of myoglobin.

Answer 2

Mass of Fe / Total mass x 100 = Percentage iron
0.34 = 56/Total mass x 100
Total mass = 16,470 g/mol