Answered: MATERIALS. Differentiate between…

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter22: Bulk Electrolysis: Electrogravimetry And Coulometry

Section: Chapter Questions

Problem 22.6QAP

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3. Discuss the relationship of refractive index to molecular polarizability.
Which of the following correctly describes the stationary and mobile phases for a reversed-phase HPLC separation? a) polar stationary phase, polar mobile phase b) non-polar stationary phase, non-polar mobile phase c) polar stationary phase, non-polar mobile phase d) non-polar stationary phase, polar mobile phase
10. In what ways can a refractive index be used to characterize a liquid sample? 11. Describe how to adjust the light for measurement in the Abbe Refractometer
Would the light from fireflies be considered an example of a fluorescence or a phosphorescence process?
Indicate the expression that relates the angle of rotation of an optically active substance to its rotational power if the length of the measurement cell is 1. A) α = [a],0 c B) acλ = [a]Ⓡ C) a/ [a] = c D) a= [a]
You're in lab and there's a bottle of solvent that has a faded label. You want to dispose of it properly (chemical waste is always labeled by its contents.) You know it is either diethyl ether or n-butanol, but you don't want to measure boiling points to determine which it is so you take an IR spectrum instead. Infrared Spectrum 1.0 0.8 0.6 0.2 0.0 3500 3000 2500 2000 1500 1000 500 Wavenumbers (cm-1) Based on the IR spectrum shown above, what is in the bottle? O n-butanol O diethyl ether Referring to the IR spectrum, describe how you came to that conclusion: Enter your answer here Transmitance
4. A sample containing ethanol and water was found to have n3º = 1.3541. Calculate the %3D exact percentage of ethanol and water in this example. Show your work. (Hint: Solve this mathematically. Assume a linear relationship between concentration and refractive index. You can make the y-intercept the refractive index of water, and use the slope formula to find the slope. The x axis (concentration) will be from 0% ethanol to 100% ethanol. From this information, you can get the equation of the line, then plug in your numbers from there.)
Mode of separation that uses a polar stationary phase: IEX HILIC SEC NPLC
why does n = t1/t2?
How does the number of carbon atoms correlate to the refractive index? How about in the case of branched isomers?
White light is directed to a reflection grating at an incident angle of 45 degrees. How many grooves per mm should the grating have to diffract first order 666 nm light at an angle of -10 degrees. Round your answer to the nearest 1 groove/mm.
this is wrong. clarify please

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MATERIALS. Differentiate between interstitial position and reticular position.