本题目来源于试卷: Physics Unit18: Electric Currents，类别为 通用国际物理
[单选题]
In an electroplating proce2p g,nvex: oh;/ r1ghdss, itbqvjrq 1z-j y0 cwya62g p.bzju.(7q 3ho m7(k is desired to deposit 40 mg of silver on a metal part by using a current of 2.0 A. Howgq63j v.y(wrj1kb2 qh7cmjayq(z7 bo z0 -.pu long must the current be allowed to run to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)
A. $16 \; s$
B. $18 \; s$
C. $20 \; s$
D. $22 \; s$
参考答案: B
本题详细解析:
暂无
| 
