posted by What is the correct answer? on .
What is the correct answer?
Question: An electroplating cell operates for 35 min with a current of 1.9 A. Calculate the amount, in moles, of electrons transferred.
Ne = It/F
= 1.9A(2100 s)/9.647 x 10^4 C/mol
= 3990/9.647 x 10^4 C/mol
Your numbers are ok but you must have pushed the wrong button somewhere.
3990 is coulombs.
96,485 is a Faraday but the difference between that and the number you used won't make that much difference.
But I calculate 3990/9.6485 x 10^4 = 0.04135. I think you keyed in 9.647 x 10^-4 instead of 9.647 x 10^+4