Question

I'm having some trouble with a problem on my physics pre-exam, if there is any formula please let me know so i can do a bit of research on it. any help is greatly appreciated in advance.

The inner membrane of a cell membrane is negative relative to the outer surface. if 1.6 X 10^-20 J of work is required to eject a positive sodium ion (Na+) from the interior of the cell, what is the potential difference between the inner and outer surface? Hint: Na+ has one electron deficiency.

Answer 1

by the way i already know the answer, i dont need it. (100 mv) i need to know how to do it or why it is 100 mv

Answer 2

woltage*q=work
q is the charge on an electron: 4.35516759 × 10-19 coulombs