The voltage across the cell membrance is 0.070 V

the cell membrane is 0.10 µm thick
what is the work done in joules to move one sodium ion (charge= 1.6 x 10 ^-19 C) from inside the cell to outside the cell?

To find the work done in joules to move one sodium ion from inside the cell to outside the cell, we need to use the equation:

Work = Charge × Voltage

First, let's convert the thickness of the cell membrane to meters:

0.10 µm = 0.10 × 10^-6 m

Now we can calculate the work done.

Work = (Charge of the ion) × (Voltage across the cell membrane)

Work = (1.6 × 10^-19 C) × (0.070 V)

Work = 1.12 × 10^-20 J

Therefore, the work done to move one sodium ion from inside the cell to outside the cell is 1.12 × 10^-20 Joules.