Please show all work and the formula used. A skeletal muscle cell, a fairly large cell, can be modeled as a 12-μm-diameter sphere. The membrane’s thickness is 7 nm and its dielectric constant is 5.0. How many K+ ions have to diffuse out of the cell to establish the membrane potential of −70 mV? What fraction is this of the number of K+ ions inside the cell at a concentration of 140 mM?

Please show all work and the formula used. A skeletal muscle cell, a fairly large cell, can be modeled as a 12-μm-diameter sphere. The membrane’s thickness is 7 nm and its dielectric constant is 5.0. How many K+ ions have to diffuse out of the cell to establish the membrane potential of −70 mV? What fraction is this of the number of K+ ions inside the cell at a concentration of 140 mM?