[12 points] Define an appropriate control volume to help you determine Rc. Break up the surface of this control volume into appropriate sections, and label each section with a number. Hint: this control volume does not surround the whole fluid system, but rather a sensibly-chosen part of the fluid. 6. [8 points] Describe why conservation of mass is an appropriate problem-solving strategy for this problem. 7. [4 points] Describe why, for one of the surfaces, you'll need to consider an infinitesimally-small area = 2. 8. [17 points] Determine an expression for Rc in terms of known problem parameters (Qs, Qc, and Rt). 9. [4 points] Why would it be important for bioengineers to know Rc in terms of these other parameters