22. The potential difference across a cell membrane is 64 mV. On the outside are 4.0 × 106 singly ionized potassium atoms. Assuming an equal negative charge on the inside, what is the membrane’s capacitance? Note that one elementary charge is about 1.6 × 10−19 C.
(A) 1 nF
(B) 10 nF
(C)100 nF
(D) 1 pF
(E) 10 pF.

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統計： A(0), B(1), C(0), D(0), E(2) #3840132