Nernst Equation help

Hi

basically as part of my A2 individual investigation project i am investigating how temperature effects the electrode potential of a cell, however i cant get my head around calculating the lnQ bit, any help would be really appreciated. thanks


http://upload.wikimedia.org/math/7/7/f/77fd93e90bedd188d9d0c0b65cfa49a5.png

^the equation

Rearrange the Nernst equation to give:

Eº_cell - E_cell = RT/nF x lnQ

You know the Eº
You find the E_cell at different temperatures
You know R, n and F (all constants for this cell) so you can directly calculate lnQ

Or if you plot nFE(diff)/R against T the plot should have a gradient lnQ