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exam 3 fall 2010 - #$'$ $'$#$/012"3%4! $ $ $...

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1 !"# %&' ()*+ ' "#$%&'%( )* +,-, -,, .#/012 "3&%4 555555555555555555555555555555555555555555 ,-./ 012-3.450-1 +6 7 7 +% 8 ! 6 + " # 9 : 8,;<+ => ? + 7 <6 7 7 <% 8 ! +6 + ? " # 9 : ,;)+ = @A1 ! BC% 7D E 7 -% 8 ! @A1 ! BC% 7+ E " # 9 : ,;+F = "GH 7 7 +% 8 7 6 7 ! "GH6 " # 9 : 8,;D+ = CGH 7 +% 8 7 +6 7 ! CGH6 + " # 9 : ,;,I = B'#J0K /0 3 LM3$#.(#1%/0E @ N 6 -+ ? N 7 -+"GHO 7 7 N6 + ? ! [email protected]? + 7 -+"GHO6 7 -+6 7 "GHO 7 7 +% 8 7 6 7 ! "GHO6 " # 9 : 8,;D+ = # P9 : # P # 9 7 QRM0S S : T.(#KJU12VWT(%3U13012V # P # 9 : 8 QRM0 X # P # 9 : 8 0C " # 9 " : " # 9 Y ZQRW0C[ M0S # P # 9 L#( GHO 7 O / : GRO /2 D,;F \]W&#M%> ( : B<H1E -W+ ( /0 U& 30K 1 /0 2%U#0K2 # P # 9 L#( .^#2.^#U(%31/0% L#(&31/#0 L(#& U(%31/0% 7 O / /2 <D;D \]W&#M% R = 0.00831 kJ/(mole K); T = 298 K; F = 96.485 kJ/(V mole); F = 1 eV/V mole R(302.#(1 #L G 3U(#22 3 &%&'(30% L(#& 2/K% - 1# 2/K% +; # P : QRM0 TGV + WTGV - 7 _ F #$ #$ = $ 2 % $ 1 30K _ /2 1^% U^3(`% #0 G; 1 mole is 6.023 X 10 23 items; *P700 is about 1.8 eV above the ground state a : ^UW & > ^ : OM30U\92 U#021301 : N;N+N b -, 8D< ] 2%U U : 2.%%K #L M/`^1 /0 3 $3UJJ& : D b -, ) &W2%U> & : c3$%M%0`1^ #L M/`^1 /0 &%1%(2; G &#M% #L .^#1#02 /2 N;,+D b -, +D #L 1^%&> - U3M#(/% /2 <;-) ]
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2 Multiple Choice: (5 points each) 1) If a certain molecule has k ic = k isc = k f = 1x10 9 s -1 , calculate the quantum yield of fluorescence. a) 0.66 b) 3x10 -9 s -1 c) 0.33 d) none of these 2) The bioluminescence from a single cell of a single organism on Earth be seen from Earth orbit by the naked eye. a) true b) false c) depends on cloud cover d) only on a moonless night with no cloud cover 3) A large extinction coefficient for the S o to S 2 transition implies a large radiative rate constant for fluorescence. a) true b) false c) neither 4) The transition dipole moment has the same lifetime as the excited state. a) true b) false c) depends on the wavelength of the transition 5) Fill the orbitals shown with electrons to illustrate the two electronic configurations (occupancy of HOMOs and LUMOs) corresponding to the second excited singlet state.
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  • Spring '14
  • Atom, following statements, Nuclear magnetic resonance, Threonine, large chemical shift

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