So if we, for example, know our cell voltage and we know our number of moles, we can rearrange this equation and solve for K in the following way. Natural log of K is equal to N times cell voltage divided by zero point 25 seven. And suppose now we know our K and we know our end. That means we can use our equilibrium constant and our end to find our cell voltage. So these two equations become very useful. And these two equations build a relationship between the concentration of reactants and products and the cell's voltage.