A series stack of alkaline cells produces 4.524 kW of power. If each cell contributes 14.5 W, how many cells are in the stack? (Round to the nearest whole number.)

Convert the total power to watts: 4.524 kW = 4,524 W. Divide by the power from each cell: 4,524 ÷ 14.5 = 312, so the stack has 312 cells. The correct choice is C, 312.

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