If a test is being run in salt water, what is the appropriate dilution agent (diluent)...
If a test is being run in salt water, what is the appropriate
dilution agent (diluent) for the analyte?
a. distilled water
b. deionized water
c. salt water
d. tolulene
c
Homework Answers
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If a test is being run in salt water, what is the appropriate dilution agent (diluent)...
Explain step by step and show work Explain what a volume-to-volume dilution refers and describe in...
Explain step by step and show work Explain what a volume-to-volume dilution refers and describe in sequential order, how would one make a 1:10 dilution of 10X TBE buffer using deionized water as your diluent. Show any calculations.
De constant kiday"). 8. A standard BOD test is run using seeded dilution water. In one...
De constant kiday"). 8. A standard BOD test is run using seeded dilution water. In one bottle, the water sample is mixed with seeded dilution water giving a dilution of 1:30. Another bottle, the blank, contains just seeded dilution water. Both bottles begin the test with DO at the saturation value of 9.2 mg/L. After five days, the bottle containing waste has DO equal to 2.5 mg/L while that containing just seeded dilution water has DO equal to 8 mg/L....
Q2. A BOD3 test was run and the results were: Dilution = 20 Initial DO =...
Q2. A BOD3 test was run and the results were: Dilution = 20 Initial DO = 10.6 mg/L Final DO = 2.9 mg/L The reaction rate constant k has been found to be 0.25 day?. (a) What is the BOD3? (2 marks) (b) What would be the ultimate carbonaceous BOD? (3 marks) (c) What is the BOD5? (3 marks) (d) What uld be the remaining oxygen demand after five days (2 marks)
EXTRATION OF BANANA DNA USING SALT, DISTILLED WATER, DETERGENT, PROTEOLYTIC AGENT(ex: Protease or pineapple juice) AND...
EXTRATION OF BANANA DNA USING SALT, DISTILLED WATER, DETERGENT, PROTEOLYTIC AGENT(ex: Protease or pineapple juice) AND 70-95% ISOPRORYL ALCOHOL. 1. What type of organisms and cells contain DNA? 2. What is the role of DNA in organisms? 3. Why would you want to extract the DNA from the organism? 4. In the procedure, why is the banana crushed or ground up into a pulp? 5. Why is detergent added to the pulp? 6. Look up the meaning of the term...
Dilution, help?? 5. You add 25uls of antibody to 475 uls of water - what dilution...
Dilution, help??
5. You add 25uls of antibody to 475 uls of water - what dilution did you just make? 6. (3 pts) To obtain a countable plate to quantify your bacterial sample you first dilute the sample 1/500 in Tube 1 and then make a 1/25 dilution of this sample in Tube 2. If the total volume for your dilutions is 1 ml: a. How much water should be in Tube 1 and how much of your initial bacterial...
The salinity (salt concentration) of blood is approximately 0.9% while the salinity of sea water is...
The salinity (salt concentration) of blood is approximately 0.9% while the salinity of sea water is approximately 3.5%. Explain, in your own words using terms such as hyper- or hypotonic, osmosis, diffusion, concentration gradient, and so forth, what would happen if a) your blood cells were placed in sea water instead of blood plasma and b) your blood cells were placed in distilled water instead of blood plasma. a) sea water: b) distilled water:
9. A new assay is used to test 120 samples from patients with a clinically confirmed...
9. A new assay is used to test 120 samples from patients with a clinically confirmed diagnosis of the relevant infection and 50 samples from healthy control subjects. The test results were the infected patients and positive for 10 of the healthy controls. positive for 90 of What is the sensitivity of the assay? A. 57% B. 75% C. 80% D. 90% Using the narrative of question 9, calculate the assay's specificity A. 57% B. 75% C. 80% D. 90%...
5.00 mL stock 5.00 mL Dilution A 5.00 mL Dilution B + 45.0 mL Water +...
5.00 mL stock 5.00 mL Dilution A 5.00 mL Dilution B + 45.0 mL Water + 45.0 mL Water + 45.0 mL Water O b lo Dilution C Dilution A Dilution B Example #5. Solution A is prepared by diluting 1.00 mL of 0.160 M CaCl2 to 50.0 mL. Solution B is prepared by diluting 10.0 mL of Solution A to 500.0 mL. What is the concentration of CaCl2 in Solution B? O lodno tlo iz obdobimo t 100 babe...
21. Answer ALL parts of this question. The anti-inflammatory agent, (S)-naproxen sodium salt has a specific...
21. Answer ALL parts of this question. The anti-inflammatory agent, (S)-naproxen sodium salt has a specific rotation of +66º. The commercial preparation of the latter agent results in a mixture that has a 97% enantiomeric excess (ee). colo H3C0 (S)-naproxen sodium salt (a) Draw the R enantiomer of naproxen sodium salt. (1 mark) (b) What effect does the R enantiomer have on plane-polarized light? (1 mark) (c) What is the observed specific rotation of anti-inflammatory agent mixture? (4 marks) (d)...
7. If complement interferes with test results, the serum sample should be A. treated with an...
7. If complement interferes with test results, the serum sample should be A. treated with an anticoagulant. B. frozen and thawed before testing C. heated to 56°C for 30 minutes. D. centrifuged at 3,000 g for 30 minutes. 8. Calculate the quantities of both diluent and solute needed to prepare 70 ml of a 10% solution of acetic acid. Show your calculations. 9. A new assay is used to test 120 samples from patients with a clinically confirmed diagnosis of...
De constant kiday"). 8. A standard BOD test is run using seeded dilution water. In one bottle, the water sample is mixed with seeded dilution water giving a dilution of 1:30. Another bottle, the blank, contains just seeded dilution water. Both bottles begin the test with DO at the saturation value of 9.2 mg/L. After five days, the bottle containing waste has DO equal to 2.5 mg/L while that containing just seeded dilution water has DO equal to 8 mg/L....
Q2. A BOD3 test was run and the results were: Dilution = 20 Initial DO = 10.6 mg/L Final DO = 2.9 mg/L The reaction rate constant k has been found to be 0.25 day?. (a) What is the BOD3? (2 marks) (b) What would be the ultimate carbonaceous BOD? (3 marks) (c) What is the BOD5? (3 marks) (d) What uld be the remaining oxygen demand after five days (2 marks)
Dilution, help??
5. You add 25uls of antibody to 475 uls of water - what dilution did you just make? 6. (3 pts) To obtain a countable plate to quantify your bacterial sample you first dilute the sample 1/500 in Tube 1 and then make a 1/25 dilution of this sample in Tube 2. If the total volume for your dilutions is 1 ml: a. How much water should be in Tube 1 and how much of your initial bacterial...
9. A new assay is used to test 120 samples from patients with a clinically confirmed diagnosis of the relevant infection and 50 samples from healthy control subjects. The test results were the infected patients and positive for 10 of the healthy controls. positive for 90 of What is the sensitivity of the assay? A. 57% B. 75% C. 80% D. 90% Using the narrative of question 9, calculate the assay's specificity A. 57% B. 75% C. 80% D. 90%...
5.00 mL stock 5.00 mL Dilution A 5.00 mL Dilution B + 45.0 mL Water + 45.0 mL Water + 45.0 mL Water O b lo Dilution C Dilution A Dilution B Example #5. Solution A is prepared by diluting 1.00 mL of 0.160 M CaCl2 to 50.0 mL. Solution B is prepared by diluting 10.0 mL of Solution A to 500.0 mL. What is the concentration of CaCl2 in Solution B? O lodno tlo iz obdobimo t 100 babe...
21. Answer ALL parts of this question. The anti-inflammatory agent, (S)-naproxen sodium salt has a specific rotation of +66º. The commercial preparation of the latter agent results in a mixture that has a 97% enantiomeric excess (ee). colo H3C0 (S)-naproxen sodium salt (a) Draw the R enantiomer of naproxen sodium salt. (1 mark) (b) What effect does the R enantiomer have on plane-polarized light? (1 mark) (c) What is the observed specific rotation of anti-inflammatory agent mixture? (4 marks) (d)...
7. If complement interferes with test results, the serum sample should be A. treated with an anticoagulant. B. frozen and thawed before testing C. heated to 56°C for 30 minutes. D. centrifuged at 3,000 g for 30 minutes. 8. Calculate the quantities of both diluent and solute needed to prepare 70 ml of a 10% solution of acetic acid. Show your calculations. 9. A new assay is used to test 120 samples from patients with a clinically confirmed diagnosis of...
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