homework_452hmwk9 - 1 2010 Sarah L. Keller (Last!) Homework...

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Unformatted text preview: 1 2010 Sarah L. Keller (Last!) Homework Set #9 Dont forget about Homework 1C. Keep a copy of this set since we may not be able to return graded versions to you before the final. You are allowed to bring one page of notes to the final exam (one side only of an 8.5 x 11 sheet). You can write anything on that sheet. You must turn in your sheet with your exam, so put your name on it and keep a copy for yourself if youd like one. I will NOT provide any equations on the final. The final is on Wednesday, Mar 17, 8:30am, same room as always, same seating chart. --------------------------------------------------------------------------------------------------------------- Some of these are very quick questions. You should be able to finish early to study for the final. 1) The answers to Midterm #2 will be posted in the cabinet outside the classroom (not online). a) Now that you have the luxury to slowly read all the problems, which problem(s) do you find most intellectually interesting? (Tell me the name of the problem, not the number). b) Choose one of the long problems that you made mistakes on or didnt have time to do. Write the full question and correct answer. Make sure you understand it, and what you might have missed the first time. 2) A new ion-channel named thermodynamin goes from a closed state to an open state. a) If the channel is open 1/5 of the time under standard equilibrium conditions on T = 37 C, what is the molar standard Gibbs free energy associated with the channel opening? b) How much non-PV work of some kind (e.g. of a patch clamp) would be required to keep the ion channel open 60% of the time (also at 37 C)? 3) In a 10-2 M NaCl solution at 25 C, an indicator dye works when bound to DNA or free in solution. When it is bound to DNA, the pH is 3.0 pH units higher than when free in solution....
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This note was uploaded on 03/04/2010 for the course CHEM CHEM 452 taught by Professor Robinson during the Winter '09 term at University of Washington.

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homework_452hmwk9 - 1 2010 Sarah L. Keller (Last!) Homework...

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