The class is Corrosion and Corrosion Control, which falls under Mechanical Engineering with a Materials focus, specifically on electroplating metals and the chemistry behind it.
The problem is:
One rectangular cross sectional strip of steel, 10 mm x 10 mm, is to be electroplated with nickel on one side only to a thickness of 40 mm. This is achieved using a cathode current density of 3 A dm-2 and a cathode efficiency of 95 %. Calculate the plating time, given: atomic wt. of Ni: 58.71 and density: 8900 kg m-3[5 points].
Please help!