How many grams of chromium could be deposited on a bracelet using 0.180 A of electricity for 4.65 hours
coulombs = A x secnds = ?
Cr probably in the +3 state so 96,500 coulombs will deposit atomic mass/3 g Cr (about 52/3 = 17).
Then 17 x (coulombs,96,500) = ? g Cr.