Final answer:
The new flow rate of the IV solution when the glucose is replaced by whole blood with higher viscosity is 1.6 cm³/min.
Step-by-step explanation:
The question is asking about the change in flow rate of an IV solution when the glucose is replaced by whole blood. The new flow rate can be calculated using the principles of fluid dynamics, specifically the Poiseuille's law. According to Poiseuille's law, the flow rate is inversely proportional to the viscosity of the fluid. So, if the viscosity is 2.50 times that of the glucose, the new flow rate would be 4.00 cm³/min divided by 2.50, which is 1.6 cm³/min.