To measure the CMC, Fluorescence, Absorbance, Conductivity were measured. which one is better than the others?
Homework Answers
It depends on the concentration range where micellization is expected. Below 0.01 moles per litre, surface tension and conductivity works well, for ionic systems of course in the case of conductivity. At higher concentration, any thermodynamic property woks well.
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To
measure the CMC, Fluorescence, Absorbance, Conductivity were
measured.
which one is better than the others?
In comparing fluorescence spectroscopy to UV‑Vis absorption spectroscopy, which of the statements is true? Fluorescence measurements...
In comparing fluorescence spectroscopy to UV‑Vis absorption spectroscopy, which of the statements is true? Fluorescence measurements do not suffer deviations from linearity like absorbance measurements do. Fluorescence measurements are more precise and less noisy because only the intensity of the emitted light is measured. Fluorescence instruments are less expensive than absorption measurements. Fluorescence measurements have better detection limits because at low concentrations a low intensity emission signal is being measured against a low intensity background signal.
Disease occurrence can be measured as prevalence or incidence. Which measure is better suited for the...
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Critique this statement: “NPV is a better measure of project profitability than IRR because it leads to better capital investment decisions.” From a purely financial perspective, are there situations in which a business would be better off choosing a project with a shorter payback over one that has a larger NPV?
Consider the three graphs below, which show the quantity of DNA in cells measured by fluorescence...
Consider the three graphs below, which show the quantity of DNA in cells measured by fluorescence in flow cytometry. The x-axis represents the relative amount of DNA per cell, and the relative intensity of the florescence on the y-axis represents the number of cells with that amount of DNA in the cell. Look at the experiment shown on page 248 of your textbook. 1) A B C 2) 20-40,一60一助100 20-40 60一負100 40, 60 N 100 Amount of fluorescence per cell...
C. Problems 1Explain the difference between transmittance, absorbance, and molar absorptivity Which one is proporti...
C. Problems 1Explain the difference between transmittance, absorbance, and molar absorptivity Which one is proportional to concentration? 2. The absorbance of a 2.3lx 10 M solution of a compound is 0.822 at a wavelength of 266 nm in a 1.00 cm cell. Calculate the molar absorptivity at 266 nm 3. A compound with a molecular weight of 292.16 was dissolved in a 5-ml volumetric flask. A 1.00-mLaliquat was withdrawn, placed in a 10-mL volumetric flask, and diluted to the mark....
What would be the consequence of primers that bound some bacterial species better than others? What...
What would be the consequence of primers that bound some bacterial species better than others? What is contained in a "master mix"? The master mix contains 8. Sometimes one can observe a "cloud" under the 100 bp fragment in a PCR gel (thus very small fragments of DNA). What produces this "cloud"? What type of charge does DNA possess? DNA possesses a
Gouax (1971) hypothesized that we like others better when we’re in a good mood than when...
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Seminar Assessment Which is a better measure of capital budgeting, IRR or NPV. When would you...
Seminar Assessment Which is a better measure of capital budgeting, IRR or NPV. When would you use one method to the other?
2. Our experimentally derived "action spectrum" seemed at odds with our directly measured Absorbance Spectrum in...
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QUESTION 20 Which one or more of the following quantities will two observers always measure to...
QUESTION 20 Which one or more of the following quantities will two observers always measure to be the same, regardless of the relative velocity between the observers? A. The time interval between two events The length of an object c. The speed of light in a vacuum D. The distance travelled by the object QUESTION 21 Which one of the following statements concerning the dilated time interval is false? Alt is always greater than the proper time interval alt depends...
Consider the three graphs below, which show the quantity of DNA in cells measured by fluorescence in flow cytometry. The x-axis represents the relative amount of DNA per cell, and the relative intensity of the florescence on the y-axis represents the number of cells with that amount of DNA in the cell. Look at the experiment shown on page 248 of your textbook. 1) A B C 2) 20-40,一60一助100 20-40 60一負100 40, 60 N 100 Amount of fluorescence per cell...
C. Problems 1Explain the difference between transmittance, absorbance, and molar absorptivity Which one is proportional to concentration? 2. The absorbance of a 2.3lx 10 M solution of a compound is 0.822 at a wavelength of 266 nm in a 1.00 cm cell. Calculate the molar absorptivity at 266 nm 3. A compound with a molecular weight of 292.16 was dissolved in a 5-ml volumetric flask. A 1.00-mLaliquat was withdrawn, placed in a 10-mL volumetric flask, and diluted to the mark....
What would be the consequence of primers that bound some bacterial species better than others? What is contained in a "master mix"? The master mix contains 8. Sometimes one can observe a "cloud" under the 100 bp fragment in a PCR gel (thus very small fragments of DNA). What produces this "cloud"? What type of charge does DNA possess? DNA possesses a
Seminar Assessment Which is a better measure of capital budgeting, IRR or NPV. When would you use one method to the other?
2. Our experimentally derived "action spectrum" seemed at odds with our directly measured Absorbance Spectrum in that blue light is absorbed more than red light, yet our chloroplasts produced a higher rate of photosynthesis when exposed to red light than when exposed to blue light. This seems backwards. One variable that was out of our control was our source of white light. Our lamps were equipped with incandescent light bulbs. Research the emission spectrum (spectral output) of incandescent light bulbs,...
QUESTION 20 Which one or more of the following quantities will two observers always measure to be the same, regardless of the relative velocity between the observers? A. The time interval between two events The length of an object c. The speed of light in a vacuum D. The distance travelled by the object QUESTION 21 Which one of the following statements concerning the dilated time interval is false? Alt is always greater than the proper time interval alt depends...
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