Myoglobin is a protein that participates in oxygen transport. For myoglobin in water at 20°C, s = 2.04 × 10⁻¹³s, D = 1.13 × 10⁻¹⁰ m² s⁻¹, and V = 0.740 cm g⁻¹. The density of water is 0.998 g cm³ and the viscosity is 1.002 cP at this temperature.

a. Using the information provided, estimate the size of myoglobin.

b. What is the molecular weight of myoglobin?