i need 75ml of a 1:4 dilution of reagent X. how much reagent X do i need to make this?
i need 75ml of a 1:4 dilution of reagent X. how much reagent X do i...
Please show how to do these enumeration questions by showing the work. What is the dilution factor if you add 625 µL of culture to 4.375 mL of dilution medium? You count the 10-3 dilution of a yeast suspension using the 1/25 mm2 boxes : you find 45 cells in box 1, 15 cells in box 2, 42 cells in box 3, 23 cells in box 4, and 26 cells in box 5. a) What is the original concentration of...
i need help with these 3 problems. Thanks so much 1) How much 600% NaOH should I put in a 20ml tube if my dilution ratio is 1/40. (What is the concentration of the tube) 2) We have a solution of NaCl in water that has a test analysis of 3.Oppm. What is the concentration that you should ifyour analyzed sample is the production of a 1/10, 1/10, 1/6 three tube dilution? 3) You have a material that is 2500...
Describe how to do a serial dilution of a 1 x 10-3 M solution to obtain 1 L of a 1 x 10-9 M solution. Please include necessary volumes and equipment that would need to be used in a lab.
Hello, I need help answering these two questions. Thank you! 1. How do I make 5 mL of a 1/10 dilution of a solution? 2. How do I figure out the concentration of an undiluted solution(I have the absorbance but the reading is off) if I am unable to use a standard curve?
How do I do the dilution calculations for this question? You will be given stock concentrations of both BSA and GAPDH at 4 mg/ml. Dilute the BSA and GAPDH to be used for the plate coat to a final concentration of 10 μg/ml in freshly prepared phosphate buffered saline (1 x PBS, 0.01M phosphate, 0.15M NaCl, pH 7.4).
I need to prepare a 4M solution of NaCl. How would I do that? Then I'd need to use that solution to prepare some other 4L volume reagent with a final concentration of 1M NaCl. How would I make that? What is the role of magnesium in dna replication ?
Reagent Calculation Before coming to class, you will need to calculate how much of the phenylmagnesium chloride solution will be needed for your reaction. You should calculate for 2.0 equivalents of Grignard reagent based on how much benzophenone you are to use in the reaction. 2.0 M in THF of phenylmagnesium (2 eq) benzophenone = 0.120 g Please help me figure this out! I keep getting the wrong answer. Professor said it should be 0.658 mL but I'm getting 0.3197 and...
I need to prepare a 5M solution of NaCl. How would I do that? Then I'd need to use that solution to prepare some other 5L volume reagent with a final concentration of 1M NaCl. How would I make that? Tell me about the role of magnesium in dna replication.
Help! Not sure how to do dilutions! 1. Calculate the serial dilutions using the following diagrams. 5mL 5mL 1mL 25mL 99ml 75mL 45mL 5mL Dilution: 0.1mL 01mL 0.1mL 1.0mL .9mL 9.99ml 99.9mL 2mL Dilution:
How would you make a 4 fold dilution of X-gal? What would the concentration of the diluted solution be?