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I need serious help on this one!! Gold can be plated out one atom in thickness...

I need serious help on this one!! Gold can be plated out one atom in thickness and look like solid gold. If a spoon has a surface area of about 101 cm2 and if gold atoms can be packed 9.07x1014atoms/cm2, how long would it take using your home current of 15 amps to convert a metal ring into one that looked like solid gold using Au3+? A. 9.8x10-4seconds B. 0.19 seconds C. 2.9x10-3seconds D. 0.58 seconds

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