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## Main Question or Discussion Point

I looked this up but couldn't find sufficient information on it. What I know is that calibration curves are used to find the concentration of an unknown compound by graphing a series of measurements of a property like light absorbance from standard solutions of that compound. What I don't get is how this graph would be used to find the concentration of unknowns though. Lets say I measure the absorbance of an unknown would I just plug the absorbance value into the curve equation or just find the corresponding x (or y) value? If so is that all they mean when they say calibration curve?