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Beer–Lambert law

# Beer–Lambert law

AP.Chem: SAP‑8 (EU), SAP‑8.C (LO), SAP‑8.C.1 (EK), SAP‑8.C.2 (EK)

## Problem

A student is tasked with determining the number of moles of $\ce{KMnO4}(aq)$ in a 150, point, start text, m, L, end text sample of an unknown solution. The student prepares a series of solutions with known concentrations of $\ce{KMnO4}(aq)$ and measures the absorbance of each at an appropriate wavelength. These data are used to construct the calibration plot shown below.
If the absorbance of the unknown solution is 0, point, 50, how many moles of $\ce{KMnO4}(aq)$ does the 150, point, start text, m, L, end text sample contain?