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2010 final Exam - Chemistry 24100 Spring 2010 Final Exam...

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Chemistry 24100 Spring 2010 Final Exam Name __________________________________ TA __________________________________ Section __________________ 1. You are responsible for all information provided. Useful Information is on the next page. 2. Show all work on the exam, and write answers in ink. Clearly indicate your answer and cross out any writing that should be ignored in grading. 3. There are EIGHT questions, a Bonus, and some Helpful material including a Periodic Table.
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Problem 1. _____________/20 Problem 2. _____________/20 Problem 3. _____________/20 Problem 4. _____________/20 Problem 5. _____________/20 Problem 6. _____________/20 Problem 7. _____________/20 Problem 8. _____________/20 Bonus _____________/5 Total _____________/160
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A hydrogenic orbital has n – 1 total nodes of which l are non- radial nodes. Potentially Useful Information F = 96,500 J mol -1 V -1 = 96,500 C mol -1 1 mol e - = 1 F R = 8.314 J mol -1 K -1 E(eV) = 1239.8/ λ (nm) 1 eV = 96.485 kJ mol -1 Δ Gº = -nFEº log K eq = E cell = E 0 cell - log (T = 298 K) nE cell 0 00592 . . n    products reactants E = -(13.6 Z 2 )/(n) 2 Energies of a hydrogen-like atom in eV Slater’s Rules σ i = 1.00 for e - in (n–2) shell σ i = 0.85 for e - in (n–1) shell Z eff = Z - Σσ i σ i = 0.35 for e - in same (ns,np) shell σ i = 0.00 for e - in (n+1) shell Cubic closest packing Radius Ratio Rules r + /r - (minimum) Lattice 0.22 ZnS 0.41 NaCl 0.73 CaCl Nuclear Chemistry c = 3.00 x 10 8 m s –1 1 MeV = 1.602 x 10 –13 J Δ E ( in MeV) = c 2 ( Δ m) = 931.5 ( Δ m) (mass in amu) 1 g = 6.022 x 10 23 amu 1 1 H mass = 1.007825 amu 1 0 n mass = 1.0086649 amu
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1. (20 points.) Atomic structure and periodicity. A. Identify the atom (or ion) associated with each of the following electron configurations: i) [Ar]3d 7 (a M 2+ ion) ii) [Ne]3s 2 3p 2 C. [Kr]4d 10 5s 2 D. [He]2s 2 2p 6 (E 2- ion) B.
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