What is the permeability to sodium ions, Biology

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An impermeable membrane separates a one liter solution of 1M NaCl in the left compartment from a one liter solution of 2M KCl in the right compartment.  At 2 AM the membrane became permeable to sodium ions.  At 4 AM the membrane also became permeable to potassium ions while maintaining its permeability to sodium ions.  The amount

A. of sodium ions in the left compartment at 3 AM is equal to the amount of sodium ions in the left compartment at 1 AM.

B. of potassium ions in the left compartment at 5 AM is equal to the amount of potassium ions in the right compartment at 5 AM.

C. of sodium ions in the left compartment at 3 AM is equal to the amount of sodium ions in the left compartment at 5 AM.

 


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