We are learning about colligatve properties in physical chemistry and I was wondering what I am doing wrong with this question?

We are learning about colligatve properties in physical chemistry and I was wondering what I am doing wrong with this question?

At 37 °C the concentration of Fe3+ inside a cell is 0.095 M and outside is 0.014 M. The cell membrane is permeable to Fe3+. What potential difference in volts would have to exist across the membrane for Fe3+ to be in equilibrium at the stated conditions? Give you answer as the absolute value of the potential difference in volts.

I know I should be using the nernst equation: deltaE = RT/nF * ln([Fe3+ out]/[Fe3+ in])

Where

R = 8.314

T = 310.15

n = 1

F = 96485

[Fe3+ out] = 0.014

[Fe3+ in] = 0095

But I keep getting the answer 0.05117. What am I doing wrong?