Measuring blue food dye in sports drinks

Goal: Use the Open Colorimeter to experimentally calculate the molar extinction coefficient of FD&C Blue #1 Beer’s Law states that absorbance of a sample (Abs) depends on the molar concentration (c), light path length in centimeters (l), and molar extinction coefficient (ε) for the dissolved substance at the specified wavelength (λ) as follows: Absorbance = ε c l Molar extinction coefficient (also known as molar absorptivity or attenuation coefficient) is a measure of how strongly a substance

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Food dyes have very high LD50 values and they are

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