Question: A skeletal muscle cell, a fairly large cell, can be modeled as a 12-m-diameter sphere. The membrane's thickness is 7 nm and its dielectric constant

A skeletal muscle cell, a fairly large cell, can be modeled as a 12-m-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?

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