A calibration plot of absorbance vs. concentration (ppm) was obtained with standard known Red 40 dye solutions. The slope of the best-fit straight line of the plot is 0.038 ppm- 1 The absorbance of the dilute unknown sports drink was 0.64 What is the concentration of this dilute unknown sports drink ?
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= molar absorptivity of this solution
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A calibration plot of absorbance vs. concentration (ppm) was obtained with standard known Red 40 dye...
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