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Calcium metal can be obtained by the direct electrolysis of molten CaCl 2 at a voltage of 3.2 V. (a) How many joules of electrical

  • Calcium metal can be obtained by the direct electrolysis of molten CaCl2 at a voltage of 3.2 V.

  •  (a) How many joules of electrical energy are required to obtain 12.0 1b of calcium?

  •  (b) What is the cost of the electrical energy obtained in (a) if electrical energy is sold at the rate of nine cents per kilowatt hour?

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