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Potassium ions (K+) move across a 7.0-nm- thick cell membrane from the inside to the outside....

Potassium ions (K+) move across a 7.0-nm- thick cell membrane from the inside to the outside. The potential inside the cell is −80.0 mV, and the potential outside is zero. What is the change in the electrical potential energy Δ? electric of the potassium ions as they move across the membrane?

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