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QUESTION 1 A food dye solution has a dye concentration of 2.5 x 10- M. If...
1. A stock solution of blue dye has a concentration of 4.0 x 10 M. If...
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?
The concentration of dye in Solution A is 20.926 M. A serial dilution is performed to...
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.
What volume (mL) of crystal violet stock solution 2.5 x 10-5M is required to prepare a...
What volume (mL) of crystal violet stock solution 2.5 x 10-5M is required to prepare a concentration of 0.00000125 M to a total of 10 mL diluted solution?
Pre-lab: Concentration of Riboflavin 1. The following absorbance spectrum is recorded for a dye. Which is...
Pre-lab: Concentration of Riboflavin 1. The following absorbance spectrum is recorded for a dye. Which is the most likely color of this dye? a. Blue-green b. Colorless c. Red d. Black M stock solution is diluted to 10.00 ml, what is the final 2. If 4.00 mL of a 5.00 x 10 concentration? 3. The absorbance of known concentrations of red food dye were measured in order to generate the following calibration curve. 2. Annotate the graph with the labels...
The concentration of dye in Solution A is 20.286 M. You have 13 mL of water...
The concentration of dye in Solution A is 20.286 M. You have 13 mL of water at your disposal to make the dilutions. The solution is diluted twice, to make Solutions B and C. In the first dilution, 5 parts of Solution A is diluted with 12 parts water to make Solution B. In the second dilution, 2 parts of Solution B is diluted with 4 parts water to make Solution C. What is the concentration of dye in Solution...
1. A student makes a solution by mixing 7.0 mL of a 4.5 x 10 M...
1. A student makes a solution by mixing 7.0 mL of a 4.5 x 10 M solution of Allura Red and 3.0 ml of water. What is the concentration of Allura Red in the resulting solution? A student is interested in the concentration of blue dve in his favorite beverage. He knows that spectroscopy can be used to determine the concentration of dye molecules in a solution. After making several solutions of known concentration, the student measured the absorbance of...
Calculate the concentration of bleach and dye for these 6 trials. (equation :C1V1=C2V2) Thank you 1....
Calculate the concentration of bleach and dye for these 6 trials. (equation :C1V1=C2V2) Thank you 1. use 2.5 mL of the 2.5x10^-5 M dye and 0 mL of water. Add 0.5 mL of the 0.76M bleach . 2. use 1 mL of the 2.5x10^-5 M dye and 1 mL of water. Add 0.5 mL of 0.76M bleach. 3. use 1 mL of the 2.5x10^-5M dye and 2 mL of water. Add 0.5 mL of 0.76M bleach. 4. use 1.5 mL...
1. Serial dilution Questions: a) (5 pts) Suppose you begin with stock solution of dye that has a concentration of 3...
1. Serial dilution Questions: a) (5 pts) Suppose you begin with stock solution of dye that has a concentration of 350.0 mg/L and do the following set of serial dilutions on it: 5.00 mL of stock diluted to a total volume (TV) of 500.00 mL (Dilution 1); 2.00 mL of Dilution 1 is then diluted to a TV of 250.00 mL (Dilution 2); finally, 1.00 mL of Dilution 2 is then diluted to a total volume of 100.00 mL. Calculate...
Chemistry lab question! Help please! A student finds a solution of blue dye #2 (another food...
Chemistry lab question! Help please!
A student finds a solution of blue dye #2 (another food dye we are not using in this lab) in a 1.0 cm cuvette has a maximum absorbance of 0.572 at 613 nm. The molar extinction coefficient, E, of blue #2 at the same wavelength is 1.21 * 10^4 M^-1 cm^-1. Calculate the concentration of this solution. The same student as in question 3 brings the blue dye #2 solution to her friend Bob to...
4.34 mL of a dark blue solution with a dye concentration of 12.31%m/vis diluted to a...
4.34 mL of a dark blue solution with a dye concentration of 12.31%m/vis diluted to a total volume of 137. ml. What is the new concentration of the solution in units of %m/v? Do not include units in your answer.
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?
Pre-lab: Concentration of Riboflavin 1. The following absorbance spectrum is recorded for a dye. Which is the most likely color of this dye? a. Blue-green b. Colorless c. Red d. Black M stock solution is diluted to 10.00 ml, what is the final 2. If 4.00 mL of a 5.00 x 10 concentration? 3. The absorbance of known concentrations of red food dye were measured in order to generate the following calibration curve. 2. Annotate the graph with the labels...
1. A student makes a solution by mixing 7.0 mL of a 4.5 x 10 M solution of Allura Red and 3.0 ml of water. What is the concentration of Allura Red in the resulting solution? A student is interested in the concentration of blue dve in his favorite beverage. He knows that spectroscopy can be used to determine the concentration of dye molecules in a solution. After making several solutions of known concentration, the student measured the absorbance of...
1. Serial dilution Questions: a) (5 pts) Suppose you begin with stock solution of dye that has a concentration of 350.0 mg/L and do the following set of serial dilutions on it: 5.00 mL of stock diluted to a total volume (TV) of 500.00 mL (Dilution 1); 2.00 mL of Dilution 1 is then diluted to a TV of 250.00 mL (Dilution 2); finally, 1.00 mL of Dilution 2 is then diluted to a total volume of 100.00 mL. Calculate...
Chemistry lab question! Help please!
A student finds a solution of blue dye #2 (another food dye we are not using in this lab) in a 1.0 cm cuvette has a maximum absorbance of 0.572 at 613 nm. The molar extinction coefficient, E, of blue #2 at the same wavelength is 1.21 * 10^4 M^-1 cm^-1. Calculate the concentration of this solution. The same student as in question 3 brings the blue dye #2 solution to her friend Bob to...
4.34 mL of a dark blue solution with a dye concentration of 12.31%m/vis diluted to a total volume of 137. ml. What is the new concentration of the solution in units of %m/v? Do not include units in your answer.
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