data:
allura red ac: molar absorptivity (L/ (mol*cm)) = 2.41 * 105 ; analytical wavelength (nm)= 505; molecular weight(g/mol)= 496.42
ratio of dye in solution c to solution a: 0.1
amount of koolaid added= 0.485g
1) calculate the concentration of the dye in solution in in units of moles per liter kool aid solution
2) calculate the mass of the dye per liter koolaid solution c in units of grams/L
3) calculate the ppm concentration of the dye in koolaid solution c on a mass to volume basis.
if any other information is needed please leave a comment.
Calculate mass of the dye per liter Kool Aid solution C in units of grams/L. Absorbance= 0.546abs Molar Absorptivity= 2.41 x 10^4L mol^-1cm^-1 Analytical Wavelength= 505nm Molecular Weight= 496.42g/mol
6. (20 points) A Beer's law curve for a red food dye (max ed food dye (max = 505 nm) is shown Absorbance vs. Concentration of Red Dye Absorbance at 505nm (AU) NO NON y 1.64x R1 -0.9993 0.1 0.2 0.5 0.6 0.7 0.3 0.4 Concentration (M) The red food dye used to prepare the standard solutions for the Beer stay above is also one of the components of Strawberry Kool Aid mix. An unknown mass of Strawberry Kool-Aid mix...
Question 1 5 pts The extinction coefficient for FD&C Blue Dye #1 is 138,500 cm-L/mol at 630 nm. A chemist collected the following data at 630 nm. She also found that the absorbance of an FD&C Blue Dye #1 solution of unknown concentration was 0.229. Use your graphing calculator to generate a standard curve from this data set, and use it to determine the concentration of the unknown solution. Express your answer in 10-5M (if your answer is 5.52x105M then...
Question 1 5 pts The extinction coefficient for FD&C Blue Dye #1 is 138,500 cm-L/mol at 630 nm. A chemist collected the following data at 630 nm. She also found that the absorbance of an FD&C Blue Dye #1 solution of unknown concentration was 0.212. Use your graphing calculator to generate a standard curve from this data set, and use it to determine the concentration of the unknown solution. Express your answer in 10-SM (if your answer is 5.52x10-SM then...
Question 1 5 pts The extinction coefficient for FD&C Blue Dye #1 is 138,500 cm-L/mol at 630 nm. A chemist collected the following data at 630 nm. She also found that the absorbance of an FDSC Blue Dye #1 solution of unknown concentration was 0.229. Use your graphing calculator to generate a standard curve from this data set, and use it to determine the concentration of the unknown solution. Express your answer in 10" (if your answer is 5.52x10-M then...
Prepare a graph of absorbances for solutions B, C, D, E, F
against the Kool said in ppm on a mass to volume basis. Y axis
should be experimental absorbances and the x axis should be ppm.
Determine concentrations of dye in the other solution a b c d e f
in terms of dye in C.
Part I Mass of beaker: oa.ass Mass of beaker + Kool Aid: O 3 : 443g Kool Aid type: chen Attach the print...
Please show all work, conversions, and units. The absorption maximum for a dye is 489 nm. At this wavelength, the absorbance of a dye solution measured in a 1 cm quartz cell is 0.027. The molar absorptivity is of the dye at 489 nm is 225 L mol-1 cm-1. What is the concentration of the dye in the solution? A) 5.5 x 10-5 M B) 1.2 x 10-4 M C) 2.5 x 10-7 M D) 5.5 x 10-2 M
The molar absorptivity, ε, for the dye called m-cresol purple (C21H18O5S, molar mass = 382.436 g mol-1) was found by experiment to be 6.09×105 L mol-1 cm-1 at 579 nm. The percent transmittance of a 821 mL solution of m-cresol purple was determined to be 93.8%. If the path length of the cell is 1.51 cm, determine the mass (in g) of m-cresol purple present in the solution. Report your answer to 3 significant figures in scientific notation.
6. (5 pts) Calculate the molar absorptivity, E, for a dye solution of 0.00 È, for a dye solution of 0.000215 mol/L in a cell of pathlength 1.95 cm and a transmittance, T, of 0.255.
Table 1: Red 40 Dye Solution А в [Red 40), M 0.1000 Т. 0.0800 0.0500 0.0200 0.0000 Absorbance, AU 0.348 0.295 0.147 0.075 0 D Blank Analytical , nm: Unknown No: Unknown Abs: Slope of B-L Plot: Int'pt of Plot: [Red 40] in unk: 501.9 B-74 0.792 3.529 -0.00347 PLEASE HELP! 1. Solve for concentration (x) using your best fit line from the graph (y=mx+b) 2. What is the concentration of your unknown solution in mM? 3. What is the...