You are doing a measurement to determine the conductance of an artificial membrane. The membrane is selectively permeable to Na
. The temperature is 15 degrees C The external concentrate of Na is 500 mM The internal concentration of Na is 70 mM Using a voltage clamp apparatus you clamp the membrane voltage (Vm) at 20 mV At this clamped voltage you measure a current of -71 nA What is the membrane's conductance
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