Assume that you have a stock solution of 22 mM azure A (blue dye), and water. Using the micropipettors provided, make up 2 ml of 600 μM azure
What procedure would you use to do this?
Assume that you have a stock solution of 22 mM azure A (blue dye), and water....
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?
(16) Suppose you have a stock solution with a solute concentration of 150 mm. If you wanted to dilute this solution to make a total of 50 ml of a 25 mM solution, what volume of stock __and what volume of water_ would you use? Give your answer in ml, and show your calculations. Volume of stock. 3 ml Volume of water . 7 ml
Suppose you have stock solution with a solute concentration of 35 mM. If you wanted to dilute this solution to make a total of 1 ml of a 7 mM solution what volume of stock _____ and what volume of water _____ would you use? Give your answer in micro liters (mu l), and show your calculations. Volume of stock _____ mu l Volume of water ______ mu l
(17) Suppose you have stock solution with a solute concentration of 10 mm. If you wanted to dilute this solution to make a total of 1 ml of a 3 mM solution, what volume of stock and what volume of water would you use? Give your answer in microliters (ul), and show your calculations. Volume of stock3 ul Volume of water · T ul
Question 4 2 pts During this week's experiment, a student was provided with a stock solution of FD&C Red 40 dye that was 0.381 mM. Following the procedure in the lab manual, she created Solution #2 by pipetting 19 mL of Solution #1 to a 25 mL volumetric flask, then diluted to the calibration line with Dl water. What is the concentration of Solution #2 in mM? Note: The units of mM are used for grading purposes, and are not...
please hlep me answer those three questions asap. Please ignore question 7. Question 7 Working with buffers You need 100 ml of 120 mM phosphate buffer and you have two stock solutions from which you can make the buffer; 0.6 M NaH2PO4 (the acid form) and 0.6 M Na2HP04 (the base form). You need to add 3 times more of the base form than the acid form to achieve the desired pH. How will you make this solution? Question 8...
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
4) You have a 50 mM stock solution of sodium dodecylsulfate and you need to make 50 mL of a 0.1 mM solution. How much sodium dodecylsulfate will you need from the stock solution? 5) For Question #4, how much water will you need to add?
How would you prepare 500 ml of 0.02% methylene blue dye starting from 1% stock?
You are given a 2M stock solution of NaCl and are asked to make up 100 ml of a 1M solution of NaCl. How do you do that, using the stock solution and distilled water? Select one: O a. I would add 2 ml of the stock to 98 ml of water. O b. I would add 10 ml of the stock to 40 ml of water O c. I would add 20 ml of the stock to 80 ml...