The membrane that surrounds a certain type of living cell has a surface area of 5.37 x 10^{-9} m^{2} and a thickness of 0.89 x 10^{-8} m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 4.6.

(a) If the potential on the outer surface of the membrane is +71.6 mV greater than that on the inside surface, how much charge resides on the outer surface?

(b) If the charge in part (a) is due to K+ ions (charge +e), how many such ions are present on the outer surface?

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If the potential on the outer surface of the membrane is : the membrane that surrounds a certain type of living cell has a surface area of 5.37 x 10-9 m2 and a thickness of 0.89 |

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