# chemistry

posted by Lana

A current of 3.04 A is passed through a Cr(NO3)2 solution for 1.80 hours. How much chromium is plated out of the solution?

1. DrBob222

Coulombs = amperes x seconds
C = 3.04 x 1.80 hr x (60 min/hr) x (60sec/min) = estimated 20,000
96,485 C will deposit 52/3 g Cr or estimated 17 g Cr.
17 g x (20,000/96,485) = g Cr deposited.

2. Mona

How did you get 52/3??

## Similar Questions

1. ### chemistry

Chromium metal can be plated onto an object from an acidic solution of dichromate ions. What average current is required to plate 17.8 g of chromium metal in a time of 2.20 h?
2. ### chemistry

A car bumper is plated with chromium using chromium(III) ions in solution. If a current of 54 A flows in the cell for 45 min 30 s, determine the mass of chronium deposited on the bumper.
3. ### Chemistry

A current of 5.18 A is pass through a Cr(NO3)2 solution for 1.20 hours. How much chromium is plated out of the solution?
4. ### Chemistry

A current of 4.60 A is passed through a Pb(NO3)2 solution for 1.20 hours. How much lead is plated out of the solution?
5. ### chemistry

A current of 3.78 A is passed through a Pb(NO3)2 solution for 1.40 hours. How much lead is plated out of the solution?
6. ### Chemistry

A current of 4.60 A is passed through a Cr(NO3)2 solution for 1.10 hours. How much chromium is plated out of the solution?
7. ### Chemistry

A current of 4.60 A is passed through a Cr(NO3)2 solution for 1.10 hours. How much chromium is plated out of the solution?
8. ### Chemistry 104

A current of 3.40 A is passed through a Ni(NO3)2 solution for 1.80 hours. How much nickel is plated out of the solution?
9. ### Chemistry 104

A current of 3.40 A is passed through a Ni(NO3)2 solution for 1.80 hours. How much nickel is plated out of the solution?
10. ### Chemistry 104

A current of 3.40 A is passed through a Ni(NO3)2 solution for 1.80 hours. How much nickel is plated out of the solution?

More Similar Questions