The galvanizing of iron sheet can be carried electrolytically using a bath containing zinc sulfate solution. The sheet is made the cathode, and a graphite anode is used. Calculate the cost of electricity required to deposit 0.49 mm layer of zinc on both sides of an iron sheet 2.0 m wide and 80m long if the current is 30 A, the voltage is 3.5 V, and the energy efficiency of the process is 90%. Assume the cost of electricity is Php 12.50 per kilowatt-hr. The density of zinc is 7.1g/cm3.

The galvanizing of iron sheet can be carried electrolytically using a bath containing zinc sulfate solution. The sheet is made the cathode, and a graphite anode is used. Calculate the cost of electricity required to deposit 0.49 mm layer of zinc on both sides of an iron sheet 2.0 m wide and 80m long if the current is 30 A, the voltage is 3.5 V, and the energy efficiency of the process is 90%. Assume the cost of electricity is Php 12.50 per kilowatt-hr. The density of zinc is 7.1g/cm3.

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