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The stock solution for yellow dye #28 is 5.6 x 10-3 M. If 8.00 mL of...
1. A stock solution of blue dye has a concentration of 4.0 x 10 M. If 8.00 mL water is added to 2.00 mL of the blue dye stock solution, what is the concentration of the new solution?
Provided materials 0.01 to 0.05 M stock solutions of red and yellow dyes Dyo [stock] 0.0319 M V to mix red V of stock 100 ml 1.00 ml 264 mL yellow 0.0196 M 253 mL Experimental Procedure Dilute stock solutions by adding 1.00 mL of stock to sufficient distilled water to provide a total volume of 1.00 L 1.00 ml aliquots of stock solutions of red (0.0319 M) and yellow (0.0196 M) dyes are separately diluted with distilled water to...
2. A yellow dye, FD&C yellow 3, is used in some candy coatings. A 1.50 X 10M solution of this dye has an absorbance of 0.209 at its a. Calculate the molar absorptivity, €, of the dye at this wavelength, assuming a sample cell with a 1.0 cm pathlength. b. The yellow dye from one piece of candy is completely extracted into 10.0 mL of water and diluted to 50.0 mL with water. The absorbance of the diluted solution is...
Given a stock solution of yellow #5 with a concentration of 2.9 x 10-4 M, calculate the concentration of yellow #5 in the 4 prepared solutions (A thru D) assuming you perform these dilutions exactly as required in the procedure of this lab. 50 mL Beaker Dye stock solution 1:1 Ethanol/Water solvent A 1.00 mL 9.00 mL B 3.00 mL 7.00 mL C 5.00 mL 5.00 mL D 7.00 mL 3.00 mL
An unknown FeSCN2+ solution is prepared by adding 8.00 mL of 2.00 x 10-3 M Fe(NO3)3, 4.00 mL of 2.00 x 10-3 M KSCN, and 3.00 mL of water. Calculate the initial concentration of Fe(NO3)3 added. A) 1.07*10^-3 B) 4.00*10^-4 C) 2.00*10^-3 D) 3.75*10*-3
A stock solution of 1.24 x 10-4 M dye is available in the labo- ratory. What volume of the stock solution must be transferred to the volumetric flask to prepare a 25.00 mL dilution with a concentration of 2.00 x 10^M? Perhaps the volume in question 2 is an inconvenient frac- |tional amount. What volume should the analyst dispense to simplify the preparation of the dilution?
2. A stock solution of 1.24 x 10^-4 M dye is available in the laboratory. What volume of the stock solution must be transferred to the volumetric flask to prepare a 25.00 mL dilution with a concentration of 2.00 x 10^-5 M? 3. Perhaps the volume in question 2 is an inconvenient fractional amount. What volume should the analyst dispense to simplify the preparation of the dilution?
QUESTION 1 A food dye solution has a dye concentration of 2.5 x 10- M. If 3.0 mL of this dye solution is diluted to 15.0 mL, what is the concentration of the diluted solution? O 1.7 x 10-6 M 07.5 x 10-6 M O 7.5 x 10-5 M 2.5 x 10-5M 5.0 x 10-6 M
Suppose you have 100.00 mL of a solution of a dye and transfer 2.00 mL of the solution to a 100.00 mL volumetric flask. After adding water to the 100.00 mL mark, you take 5.00 mL of that solution and again dilute to 100.00 mL. If you find the dye concentration in the final diluted sample is 0.000129 M, what was the dye concentration in the original solution? Concentration
The concentration of dye in Solution A is 20.926 M. A serial dilution is performed to make Solutions B and C. In the first dilution, 7 mL of Solution A is diluted with 12 mL water to make Solution B. Then, 2 mL of Solution B is then diluted with 1 mL of water to make Solution C. What is the concentration of dye in Solution C? Provide your response to three significant figures in units of molarity.