1. The observation that the absorbance is linearly proportionalto the concentration of dye is a statement of which law?
2. For this question, note that you diluted your prepared drinkmix 1:10 before you obtained absorbance values, and therefore yourcalculated concentration of each dye is 1/10 that of the prepareddrink mix. You calculated that the concentration of yellow food dyein the cuvette is 0.0141 mM.  Given that the molecularweight of the yellow 5 dye is equal to 534.36 g/mol. How many gramsof yellow 5 food dye were in the 0.235 L solution of drink mix?(Remember that molarity = moles / L and that molecular weight =mass / moles). Choose the closest answer.
3. Given that the mass of the red dye in 0.5 g of prepared drinkmix is equal to 0.00089 g, what percent mass does this represent?(Percent mass = (mass of dye / mass of powder ) *100%)Â Â
4. Given that the mass of the yellow dye in 0.5 g of prepareddrink mix is equal to 0.0018 g, what percent mass does thisrepresent? (Percent mass = (mass of dye / mass of powder ) *100%)
5.The concentration of red food dye in the prepared drink mixcan be calculated from Beer's law (absorbance = path length (1 cm)* extinction coefficient * concentration). Using the extinctioncoefficient for the red dye calculated in experiment 2 and theabsorbance of the drink mix at 500 nm, calculate the concentrationof red food dye. Choose the closest answer.
6.For this question, note that you diluted your prepared drinkmix 1:10 before you obtained absorbance values, and therefore yourcalculated concentration of each dye is 1/10 that of the prepareddrink mix. You calculated that the concentration of the red fooddye in the cuvette is 0.0089 mM. Given that the molecular weight ofthe red 40 dye is equal to 496.42 g/mol. How many grams of red 40food dye were in the 0.235 L solution of drink mix? (Remember thatmolarity = moles / L and that molecular weight = mass / moles).Choose the closest answer.
7.The concentration of yellow food dye in the prepared drink mixcan be calculated from Beer's law (absorbance = path length (1 cm)* extinction coefficient * concentration). Using the extinctioncoefficient for the yellow dye calculated in experiment 2 and theabsorbance of the drink mix at 420 nm, calculate the concentrationof yellow food dye. Choose the closest answer.
8.The equation for a straight line representing the absorbanceof the red dye at the peak absorbance wavelength as a function ofthe concentration of the red dye is y = 27320x +0. The slope of theline gives the extinction coefficient. What is the molar extinctioncoefficient for the red dye?
