The membrane that surrounds a certain type of living cell has a surface area of 4.5 x 10 m² that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 4. the membrane is +70.8 mV greater than that on the inside surface. How much charge reside mart (a) is due to K* ions (charge +e), how many such ions are present on the outer surface? (a) Number i Units

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The membrane that surrounds a certain type of living cell has a surface area of 4.5 x 10 m² and a thickness of 1.5 x 108 m. Assume
that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 4.9. (a) The potential on the outer surface of
the membrane is +70.8 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?
(a) Number
(b) Number
Units
Units
Transcribed Image Text:The membrane that surrounds a certain type of living cell has a surface area of 4.5 x 10 m² and a thickness of 1.5 x 108 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 4.9. (a) The potential on the outer surface of the membrane is +70.8 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? (a) Number (b) Number Units Units
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