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Em = -40mV; Extracellular Ca++ = 5mM, Extracellular K+ = 40mM, Extracellular Na+ = 100mM; Intracellular Ca++ = 50mM, Intracellular K+ = 100mM, Intracellular Na+ = 20mM.
With the help of the Nernst equation to calculate the equilibrium potential for these three ions. Show your work below.
To which of these ions is the membrane the most permeable at rest? Why?

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