gold bars are plated from an aqueous solution of gold chloride (AuCl3) by using a current of 50 Amperes. With this current, how long would it take to plate out a 1 pound bar of gold worth almost $ 25,000? 453.59 grams weigh a pound.
1. about 3.4 hours
2. about 3.7 hours
3. about 1.23 hours
4. about 2.75 hours
5. about 3.98 hours