[erik1234]

For my IB Chemistry IA, I am trying to find the molar attenuation coefficient of FeSCN2+, and the values I currently have are the concentrations of the reactants, which were KSCN and Fe3+ and the absorbance of FeSCN2+. I was struggling to find a way to calculate the molar attenuation coefficient using the data I have, and after conducting some research I'm not sure if it is possible to do given my current data set. I have tried graphing the change in abosrbance against the change in concentration of KSCN, but that has not lead me to find any way to calculate the molar attenuation coefficient.
Is there a way to graphically deteremine the molar attenuation coefficient of FeSCN2+, or is it impossible given the current data set?

[Borek]

Hard to say not seeing the data. Broadly speaking you need to know absorbance, path length and concentration, no idea whether these are possible to calculate from the data you have not knowing what these data are.