- #1

JoeyBob

- 256

- 29

- Homework Statement:
- See image

- Relevant Equations:
- I=C/t

So I know current is just coulombs/second. Electrons are also in the unit of coulombs, so I can get coulombs to cancel.

7.9C/s/1.602E-29C = 4.93133E29 1/s

Now I just need to get mol on top. There are 6.022E23 electron in a mol so 4.93133E29 1/s / 6.022E23 atoms/mol = 8.1889E5 mol/s.

Now my problem is that I don't know what to do with the diameter. My only hint is that the units also have m^2, which could imply that I need to multiply the above by area? So using A=pir^2 I would get an area of 0.5027 m^2. Obviously multiplying this value by the above value won't get me the right answer.

What am I missing here?

7.9C/s/1.602E-29C = 4.93133E29 1/s

Now I just need to get mol on top. There are 6.022E23 electron in a mol so 4.93133E29 1/s / 6.022E23 atoms/mol = 8.1889E5 mol/s.

Now my problem is that I don't know what to do with the diameter. My only hint is that the units also have m^2, which could imply that I need to multiply the above by area? So using A=pir^2 I would get an area of 0.5027 m^2. Obviously multiplying this value by the above value won't get me the right answer.

What am I missing here?