試題詳解

59. In a certain electroplating process gold is deposited by using a current of 14.0 A for 19 minutes. A gold ion, Au⁺, has a mass of approximately 3.3x10^-22 g. How many grams of gold are deposited by this process? (e = 1.60x10^-19 C)
(A) 22g
(B) 28g
(C) 31g
(D) 36g
(E) 97g