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Unformatted text preview: 102 April, 2007Michael F. BrownCHEMISTRY 481 (Biophysical Chemistry) (STUDY GUIDE  NOT TO BE GRADED)Problem Set 09To be turned in by: NEVERWorked examplesfor this course are dealt with primarily in the Discussion Section;whereas new conceptsare introduced in the Lectures. You can get help with thehomework problems in the Discussion Sections (12:3013:20 Tuesday, Koffler 216; and13:0013:50 Wednesday, Koffler 216). The problem sets will be graded P+, P, or F andwill be used to increase or decrease borderline grades. On all computational problemsbe sure to use SI units, and indicate your answer to the proper number of significantfigures. For maximum credit show clearly how you obtained your answer, i.e.whatnumbers were combined to yield the final result.Background reading:Back of Chapter Problems related to the homework (optional):Problem 1.Calculate the ratio of the populations of the groundand first excitedenergy levelsfor the following transitions of a biomolecule at T = 298 K. Identify thelevel (s) from which absorption occurs.a)Rotationaltransitions with ˜ ν= 10 cm–1:b)Vibrationaltransitions with ˜ ν= 103cm–1:c)Electronictransitions with ˜ ν= 104cm–1:Problem 2.Let us consider some general principles of spectroscopyas applied toproteins. Calculate the ratio of the quotients of the Einstein coefficients of spontaneousand stimulated emission, A/B, relative to their value for Xrays having a wavelength of...
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This homework help was uploaded on 04/02/2008 for the course CHEM 481 taught by Professor Brown during the Spring '06 term at Arizona.
 Spring '06
 brown
 Physical chemistry, pH

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