A thin circular disk earrings 10 cm in diameter is plated with a coating of gold 0.2 mm thick from an Au+3 bath. How may days does it take to deposit the gold on one side of one earring if current is 0.193 A (Au = 197, density(Au)=19.7 g/cm 3, 1F =96500 C ,86400 =27500 p)...

  • -1
What are you looking for?