Friday
February 27, 2015

Homework Help: chemistry

Posted by anonymous on Tuesday, June 17, 2014 at 8:38pm.

"To save on production costs, most automobile bumpers are never coated with more than 200 g of chromium. Determine how much time a standard bumper should be immersed in a chromium vat."

This is what I have so far-

96,485 coulombs are required to plate 1 Cr; 52/6 = 8.67g.

To plate 200g:
96.485 * (200/8.67) = 96.485 * 23.068 C = 2,225.721 coulombs
1 A = 1 C/s
(amperes) x (time) = 2,225.721 coulombs.

I know this may seem stupid but I can't seem to remember how to determine amps. Please help.

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