In a chromatographic column, the concentration of a solute is expressed as the following. V4rDt where...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
In a chromatographic column, the concentration of a solute is expressed as the following. V4rDt „where c is the concentration, m is moles per unit cross-sectional area, D is the diffusion coefficient of solute, x is the distance along the column from the current center of the band (band center is always x-0), and t is time. The standard deviation of band is expressed as the following. (a) Prove that the peak width at half maximum is 2.350. (Hint: determine the maximum peak height using the first equation and then solve for x using the half of the maximum peak height). (b) Prove that the peak with measured at the baseline is 40. (Hint: determine the two tangential line equations at the inflection points of the first function above. Then, determine the crosspoints between the tangential lines and the baseline. ) In a chromatographic column, the concentration of a solute is expressed as the following. V4rDt „where c is the concentration, m is moles per unit cross-sectional area, D is the diffusion coefficient of solute, x is the distance along the column from the current center of the band (band center is always x-0), and t is time. The standard deviation of band is expressed as the following. (a) Prove that the peak width at half maximum is 2.350. (Hint: determine the maximum peak height using the first equation and then solve for x using the half of the maximum peak height). (b) Prove that the peak with measured at the baseline is 40. (Hint: determine the two tangential line equations at the inflection points of the first function above. Then, determine the crosspoints between the tangential lines and the baseline. )
Expert Answer:
Related Book For
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
Posted Date:
Students also viewed these chemistry questions
-
A 5 m long vertical tube of cross sectional area 200 cm2 is placed in a water fountain. It is filled with 15oC water, the bottom closed and the top open to the 100 kPa atmosphere. a) How much water...
-
A piston/cylinder with cross sectional area of 0.01 m2 has a piston mass of 100 kg resting on the stops, as shown in Fig. P2.45. with an outside atmospheric pressure of 100 kPa, what should the water...
-
A valve in a cylinder has a cross sectional area of 11 cm2 with a pressure of 735 kPa inside the cylinder and 99 kPa outside. How large a force is needed to open the valve?
-
Shown here is a list published by Electronics Weekly.com of the top five semiconductor companies in the United States by revenue ($ billions). a. Construct a bar chart to display these data. b....
-
Prunella raises peaches. Where L is the number of units of labor she uses and T is the number of units of land she uses, her output is f (L, T) = L 1 2 T 1 2 bushels of peaches. (a) On the graph...
-
In the 1990s, DuCoa, L. P., made choline chloride, a B- complex vitamin essential for the growth and development of animals. DuCoa, Bioproducts, Inc., and Chinook Group, Ltd., each had one- third of...
-
FRAUD PREVENTION AND DETERRENCE IN ACTION Assume the following facts: thirty-day collection period. The invoice is used to post-sales to the accounting system. Checks are received in the mailroom and...
-
Picasso Restoration Company completed the following selected transactions during May 2014: May 1. Established a petty cash fund of $800. 10. The cash sales for the day, according to the cash register...
-
Explain briefly why countries trade If two countries, Chile and Agentina start to trade, what will determine what each country will exportor import? Explain why countries do not produce everything...
-
Table 1 shows Apple's online orders for the last week. When shoppers place an online order, several "recommended products" (upsells) are shown as at checkout an attempt to upsell See table 2 in cell...
-
Use the discriminant to determine the number of real solutions of the equation. 4x^(2)+3x+(13)/(2)=0 infinitely many real solutions two distinct real solutions one real solution no real solution 2...
-
A major issue of contention at many colleges concerns the cost of meals that is rebated when a student does not sign up for the meal plan. The administration usually says that it should rebate only...
-
The milk industry has a number of interesting aspects. Provide economic explanations for the following: a. Fluid milk is 87 percent water. It can be dried and reconstituted so that it is almost...
-
During the 2001 anthrax scare, the U.S. government threatened to disregard Bayers patent of ciprofloxacin, the most effective drug to fight anthrax, and license the production of the drug to American...
-
Oftentimes, gas stations a couple of miles apart will differ in price by as much as 5 to 10 cents per gallon because oil companies use a pricing system called zone pricing. For example, gas is sold...
-
Most magazines offer enormous subscription deals for college students. For example, Time magazine offered a one-year subscription for $29.95, when the cover price was $3.95 per issue. This was an 85...
-
The support bracket shown below is subjected to a factored load Pu-220 kip, and is to be attached to a column flange with two identical vertical rows of ASTM A325-N, 1" diameter bolts. The bolts...
-
Sportique Boutique reported the following financial data for 2012 and 2011. Instructions(a) Calculate the current ratio for Sportique Boutique for 2012 and 2011.(b) Suppose that at the end of 2012,...
-
The method by which the massive lintels (top stones) were lifted to the top of the upright stones at Stonehenge has long been debated. One possible method was tested in a small Czech town. A concrete...
-
(a) What is the rate of energy loss in watts per square meter through a glass window 3.0 mm thick if the outside temperature is 20oF and the inside temperature is f 72oF? (b) A storm window having...
-
The maximum force you can exert on an object with one of your back teeth is about 750 N. Suppose that as you gradually bite on a clump of licorice, the licorice resists compression by one of your...
-
Consider two alternatives, each of which will accomplish the same EPA-mandated pollution control. Using an incremental IRR analysis, determine the preferred alternative assuming MARR is 20...
-
The production department of Zunni's Manufacturing is considering two numerically controlled drill presses; one must be selected. Comparison data is shown in the table below. MARR is 10 percent/year....
-
What do you know about the mathematical value of the annual worth of a project under each of the following conditions? a. The present worth of the project is greater than 0 . b. The present worth of...
Study smarter with the SolutionInn App