Some years ago a unique proposal was made to raise the titanic. the plan involved placing pontoons within the ship using a surface-controll ed submarine-type vessel. the pontoons would contain cathodes and would be filled with hydrogen gas formed by the electrolysis of water. it has been estimated that it would require about 7×108mol of h2 to provide the buoyancy to lift the ship. what is the minimum electrical energy required to raise the titanic by electrolysis?

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Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.