classes_winter09_113AID28_P_12_113A_W09

classes_winter09_113AID28_P_12_113A_W09 - [1] Application...

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Preview #12 (Chem113A W’09, due Mon. 2/2/09 at 12:05pm in class) Assigned reading: Engel 5.2--5.4, 5.8 Attendance record : I am [ ] present at or [ ] absent from this class meeting (see date and time above). Name: ________________________ Forming study groups is permissible, but you must construct your solutions independently. By writing down my name, I confirm that I strictly obey the academic ethic code when doing this preview and my statement on attendance (above) is correct. Please write down the names of everyone who you worked with on this preview in the space above.
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Unformatted text preview: [1] Application of PIB model to conjugated -bonds. Lets use more accurate numbers: 132 and 150 pm for C=C and C-C bonds instead. [2] Quantum dots. Please use the particle in a 1D box model to explain the reason why: when the size of a quantum dot gets larger, the color of the emitted photon due to the n=2 n=1 transition shifts to red. (Remark: PIB is good enough for now; a better model for quantum dots should be particle in a spherical box)...
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