What volume of sample, in mL, would be needed to make 2 mL of a 5-fold dilution? (3 significant figures needed)

What volume of sample, in mL, would be needed to make 2 mL of a 5-fold...
1. Make a 10 fold serial dilution of a protein to achieve a final concentration of 10ug/ml You are staring from a 10 mg/ml protein stock. Indicate the amount of sample needed (from previous tube) and the amount of H20 needed. Make your calculations for 100μ1 volume. (0.5pts) 10ul 90μ1 H20 10mg/ml lmg/ml
How would you make a 4 fold dilution of X-gal? What would the concentration of the diluted solution be?
You need to make 600 ml of a 20-fold dilution of household bleach. Making this dilution will require ml of bleach.
What volume of 2.80 M HCL solution would be needed to make 300 mL of a 1.50 M HCL solution
17. A sample of a culture of bacteria is subjected to 10-fold serial dilution; 0.1 mL aliquots of the dilutions are grown on agar plates and the number of colonies counted: Dilution: Number of colonies: 10- Too many to count 10-6 10- 2 0 -3 Too many 249 to count 10-4 24 2 10-5 0 BIOT 5021-SP2 Assuming that one cell gives rise to one colony, how many cells were there per mL of the original culture?
1) if 5 parts sample is added to 10 parts diluents, what is the dilution that was just made? 2. What is the ratio if 5 parts sample volume is added to 10 parts diluents volume? 3. In a 1 to 3 dilution, what is the dilution FACTOR? 4. In a 1 to 10 dilution, what is the dilution FACTOR? 5. What is the dilution FACTOR if 40 mcL of sample added to 260 mcL of diluent? 6. What is...
Serial dilution problem You have a stock of 5% SDS. You take some of that stock and dilute it 4-fold in tube #1. the tubes hold 1.5ml. give an example of how much 5% stock and how much water you would use to make 4 fold dilution - volume of 5% stock ? - volume of water? - How much volume transferred? - if you took a sample out of tube 2 and did another 4 fold dilution, what concentration...
What volume (in mL) of (8.878x10^0) M sodium hydroxide is needed to make (1.50x10^2) mL of 0.800 M solution?
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so: 1 ml stock 10 ml final -0.5 mL of stock -5 ml final volume While I have used 1:10 as a standard the same rules apply for all dilution factors. Try these problems: x 0.5 X0.5 1. You need to make a 1:25 dilution factor. If you final volume is 25 mL this means that you need_ _mL of stock and mL of solvent to make your final volume of 25 mL. 2. If you needed...
VPC 2. You have received a sample from a sewage treatment plant, and have been asked to determine how many CFU/ml are in this sample. You want to make a 1/100,000 fold dilution, but the smallest volume you can measure is 1.0 ml, and the tubes available to you only hold 10 ml. Draw a scheme showing how you would do this.