Question

Those who tell this ans of 2 questions will me mark as Brain list ​

Answer 1

Answer:

1. Given n=10 to the power 18

t = 4 second

we know that e=1.6*10 to the power -19

Now I = q/t = ne/t = 0.04A

2.Given that I = 4A

t=3 hours= 10800 second

Now I = q/t or q=It=4*10800 =43200 C

one mole of electrons means

1.6*10 to the power -19 electrons

We know that q=ne or n=q/e

if we put all values of q and e we get

n=270*10 to the power 19

=168.75*10 to the power 38 mole