You have a sample – sample 1 - that has a concentration (✗) particles. From this youtake 1 mL and add it to 99 mL water to create sample 2. You then take 1 mL of sample 2 andplace it in 99 mL of water to create sample 3. And lastly, you take 1 mL of sample 3 and add itto 9 mL of water to create sample 4. What is the final dilution factor in sample 4? You may usedrawings if it helps you understand and explain, though not necessary.

Dilution is the lab procedure used for lowering the concentration of the solute in a solution by…

Answered: You have a sample – sample 1 - that has…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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(b) Table Q1 below provides optical measurements of samples with known concentrations of analyte (ten samples were measured and the average and standard deviation are presented). They are also represented graphically in Figure Q1, below the table. Analyte concentration (nM) 0.1 0.2 0.5 1 2 5 10 15 fluorescence intensity 300000 250000 200000 150000 100000 50000 0 0 Table Q1 Fluorescence intensity (average) 9300 9200 10800 19600 37200 90000 178000 224000 5 [Analyte]/nM 10 Standard deviation 2000 1200 1000 2000 10000 30000 25000 40000 15 Figure Q1. Signal intensity for different analyte concentrations. Error bars are standard deviation. (ii) Calculate the limit of detection (LOD) for this sensor. (iii) A patient sample measured using this biosensor in the diagnostic laboratory generates a signal of 142800. The coefficient of variation of the device is 5%. Explain whether the diagnostic lab would have the confidence to report that the sample has a concentration in analyte of 8 nM or…
o NB4: Why do you think you first had to make the 1 mM solution instead of working directly from the stock solution?
Given the chromatogram below, which of the following is the possible identity of unknown sample Y? B. O Sample E O Sample F O Sample Z O Sample B ON
Milligrams 47.0 milligrams = Multiple Choice 0.47 decigrams 4.7 centigrams 0.047 grams 0.00047 hectograms All of the answer choices are correct.
An order was received for 3000 mg of powder medication to be reconstituted with 15 mL for use. The final concentration will be 120 mg/mL. What is the powder volume contained in the vial?Group of answer choices
You want to use a serial dilution to make a 1/50 dilution. The first dilution you make is a 1/5 dilution with a total volume of 1 ml. To make that dilution you would add of your stock of your solution and of your solvent. Then you make a 1/10 dilution and add of your solvent. first dilution and O 0.1 ml, 0.9 ml, 0.2 ml, 0.8 ml O 0.3 ml, 0.7 ml, 0.1 ml, 0.9 ml O 0.2 ml, 0.8 ml, 0.1 ml, 0.9 ml 0.2 ml, 0.8 ml, 0.3 ml, 0.7 ml O None of these answer choices
A 1:1000 dilution of 1mM NaCl would give: 100µM 1µM 1nM 10µM 1M 100mM 1mM 100nM 10mM
If skin cleaning solution is to be diluted 1 teaspoon to 64 ounces of water, how much water would need to be added to a container containing 1/4 teaspoon of skin cleaning solution?
If you transferred 4 mL of an undiluted sample into 96 mL of diluting fluid, what dilution have you created? 2/100 O 1/24 1/25 1/20
On the graph that relates absorbance to flavin concentration, draw a horizontal line that starts at the point on the y-axis that corresponds to the absorbance of your unknown sample and ends at the curve you drew through your data points . Next draw a vertical line that starts at the point where the horizontal line intersected the curve and ends at the x-axis. The point where this vertical line intersects the x-axis corresponds to the concentration of flavin in your unknown sample. What was the letter on the tube with your unknown sample? What is the concentration of the flavin in your unknown
A certain amount of white solid was dissolved in enough water and gives a colorless solution. A portion of the solution was added with 15% solution of alpha-naphthol solution and a few drops of conc. H2SO4 forming a violet-colored ring. Another portion was added with drops of Seliwanoff’s reagent and showed no change after being warmed in a bath. Another portion was added with equal amounts of Fehling’s A and B reagent giving a red precipitate in a blue solution after warming in a bath. a) Cite an experimental result confirming that the solid is a carbohydrate b) Is the solid starch, fructose or glucose? Support your answer.
You carry out a dilution adding 20 mL of solution A and 80 mL of water. This dilution can NOT be expressed as: 1 in 4 dilution. 1:4 dilution. 5 fold dilution. having a dilution factor of 5. 1 in 5 dilution.

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