2. We learned how ion concentration differences between the intracellular and extracellular space determines the cell resting potential. For the sake of simplicity, we only considered Na+,K+, and Clfor the model. In reality, there are many other solutes in the physiological fluids, including charged proteins and non-electrolytic solutes, such as glucose. In the equilibrium status, charge neutrality and balanced osmotic pressure are two foundational rules that all the solutes must follow. Below is a hypothetical cell in its resting state. a) What is the concentration of K+ inside the cell? b) What is the concentration of extracellular non-electrolyte? (van 't Hoff formula of osmotic pressure =cRT )