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4 Pages

### Chapter_6

Course: CHM 435, Fall 2009
School: UNC Wilmington
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Word Count: 1212

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6 Chapter 1.a) coherent radiation - EMR with identical 's or sets of 's with constant phase relationships b) dispersion of a transparent substance- transparent means not absorbed - i.e. question refers to normal dispersion - with . In normal dispersion, increases gradually and nonlinearly with increasing . c) anomalous dispersion- sharp with () due to absorption of EMR instead of transmission. d) work function...

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UNC Wilmington - CHM - 435
Chapter 7 FTIR 22. a) f b) f c) f d) f = 2(vM)/ = 2(2.75 cm/s)/(350 x 10-7 cm) = 1.57 x 105 s-1 = 2(vM)/ = 2(2.75 cm/s)/(575 x 10-7 cm) = 9.56 x 104 s-1 = 2(vM)/ = 2(2.75 cm/s)/(5.5 x 10-4 cm) = 1.0 x 104 s-1 = 2(vM)/ = 2(2.75 cm/s)/(25 x 10-4 cm) =
UNC Wilmington - CHM - 435
1. The D-1 is not constant for a prism monochromator but D-1 is almost constant for a grating monochromator. The change in D-1 is compensated for by changing the slit width. The slit width would be larger at lower 's where D-1 is small (better disper
UNC Wilmington - CHM - 435
Chapter 17 1. a) 5.86 m = 1706 cm-1, C=O stretch b) use fig.17-1: CCl4, CHCl3, C2Cl4, cyclohexane. Note: CCl4, CHCl3 are carcinogens and I think C2Cl4 is now on the list also. c) Use: ALOD = ebCLOD = CLOD ; 0.003 = CLOD ; CLOD = 0.015 mg/mL Asample =
UNC Wilmington - CHM - 435
Chapter 8 1. CaOH is a polyatomic species and therefore has vibrational and rotational energies levels that can be smeared to give broad unresolved bands whereas the Ba emission line results from atomic emission which has only electronic energy level
UNC Wilmington - CHM - 435
Chapter 18 2. Boltzmann distribution strikes again! Anti-Stokes lines result from interaction of light with molecules in the first excited vibrational state. As T increases the number of molecules in this state increases. Stokes lines result from gro
UNC Wilmington - CHM - 435
Chapter 9 1. a) releasing agent - cation which preferentially reacts with a species that would otherwise react with analyte to form a compound of low volatility (chemical interference). (p. 244) b) protective agent - prevents formation of a low volat
UNC Wilmington - CHM - 435
Chapter 26 1. a) elution - analyte(s) movement through a column or across a plate by continuous addition of mobile phase. b) mobile phase - gas, liquid, or supercritical fluid used to transport analyte(s) through stationary phase c) stationary phase
UNC Wilmington - CHM - 435
Chapter 10 1. An internal standard is a substance that responds to uncontrollable variables in a similar way to the analyte. It is introduced into both standards and samples in the same fixed amount. Ratio of analyte signal to internal standard signa
UNC Wilmington - CHM - 435
Chapter 27 3. Temperature programming is increasing the T during a GC run to decrease retention time of analytes that are taking to long to come off the column (decrease retention factors). 11. diatomaceous earth (skeletons of diatoms) 12. a) PLOT P
UNC Wilmington - CHM - 435
Chapter 11 2. ICP torch causes atomization and generates ions for MS. Reminder: In ICP-AE the torch causes atomization and excitation of the atoms. Only a relatively few ions are generated so they are not a problem for ICP-AE but there are enough gen
UNC Wilmington - CHM - 435
Chapter 13 1. a. 91.62 2. a. 0.801 3. a. 95.71 4. a. 0.5003 Note for 3 and 4: 3 and 4 assigned to further emphasize logarithmic relation between A and T. 5. A= bC For e, C must be M, and b must be cm. M = (6.23 mg/L)(1g/1000mg)(1 mol/158.03g) = 3.942
UNC Wilmington - CHM - 435
Chapter 20 2. EI leaves the analyte with the most excess E after ionization which causes more fragmentation. This yields a more complex spectrum than either CI or FI because they do not cause as much fragmentation. M+ peak in EI spectrum often missin
UNC Wilmington - CHM - 435
Chapter 14 1. This is a two point standard addition, see p. 17 or p. 376 for formula and p. 17 for derivation of formulaCunk =S1C sVs 0.656 25.7 ppm 10.00 mL 168.592 = = ppm = 21.0 7 = 21.1 ppm ( S 2 - S1 )Vx ( 0.976 - 0.656) 25.0 mL 8.00(lac
UNC Wilmington - CHM - 435
Cyclic VoltammetryTitle Page Abstract Results and Discussion Eo' and comparison to published value (15) o standard deviation in E ' and correct sig. figs. (10) in Eo' n (10) ipa/ipc (10) ipc &amp; ipa vs A (comparison of 2 electrodes) (10) 1/2 ipc &amp; ip
UNC Wilmington - CHM - 435
Exp 6-1, pts. 1 and 2 Title Page Abstract Results and Discussion Part 1 350-625 response (data) 350-625/50 color (data) 600 nm color 600nm 550nm intensity and discussion Graph from Spec 20 data, 3 curves* and mark colors; instrument response for
UNC Wilmington - CHM - 435
Atomic Emission Title Page Abstract Results and Discussion Knowns* Unknowns* table and figure captions and &amp; other errors Results and Discussion Total References Questions 1. 2. 3. Question Total Subtotal Spelling and Grammar Procedural errors Total
UNC Wilmington - CHM - 435
Fourier Transform Infrared Spectroscopy (FT-IR) Title Page Abstract Results and Discussion reference background spectrum pathlength resolution choice cm-1 choice for Beer's Law plot Beer's Law plots from corrected and uncorrected data unknown 2-penta
UNC Wilmington - CHM - 435
Ion Chromatography 2007 Title Page (05) Abstract (10) Results and Discussion Cl- calculation result and its significance (10) qualitative knowns, tr's and peak areas (25) qualitative unknown (10) -2 H and N from SO4 (10) (20) R's and s in qualitativ
UNC Wilmington - CHM - 101
CHM 101/102Fractional CrystallizationGeneral Chemistry 101/102 Laboratory Manual University of North Carolina at WilmingtonLaboratory ManualCHM 101/102Fractional CrystallizationPurpose Use the technique of vacuum filtration to separate
UNC Wilmington - CHM - 101
CHM 101/102Fermentation and DistillationGeneral Chemistry 101/102 Laboratory Manual University of North Carolina at WilmingtonLaboratory ManualCHM 101/102Fermentation and DistillationPurpose To demonstrate the production of ethanol by t
UNC Wilmington - CHM - 101
CHM 101/102Stoichiometry: Loss of CO2General Chemistry 101/102 Laboratory Manual University of North Carolina at WilmingtonLaboratory ManualCHM 101/102Stoichiometry: Loss of CO2Purpose To apply the concept of limiting reactant to determ
UNC Wilmington - CHM - 101
CHM 101/102Exchange ReactionsGeneral Chemistry 101/102 Laboratory Manual University of North Carolina at WilmingtonLaboratory ManualCHM 101/102Exchange ReactionsPurpose To study exchange reactions and learn more about the descriptive ch
UNC Wilmington - CHM - 101
CHM 101/102CalorimetryGeneral Chemistry 101/102 Laboratory Manual University of North Carolina at WilmingtonLaboratory ManualCHM 101/102CalorimetryPurpose To learn techniques for measuring changes in thermal energy (heat) in substances.
UNC Wilmington - CHM - 101
CHM 101/102Aspirin SynthesisGeneral Chemistry 101/102 Laboratory Manual University of North Carolina WilmingtonLaboratory ManualCHM 101/102Aspirin SynthesisPurpose To introduce organic chemistry by synthesizing Aspirin. To review the c
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EQUATORIAL BOUNDARIES OF THE EARTH'S MAGNETOSPHERE25 Magnetosheath 20 15 10 -Y(GSM) (Re) 5 0 -5 -10 -15 -20 -25 -20 Rm Rw Plasmasphere Separatrix Bow Shock Magnetopause Synchronous OrbitLecture #17 March 5, 2002 Plasmapause ObservationsProfessor
UNC Wilmington - CHM - 435
AA Lab - Part E and modifications of Parts B and C A. Omitted. B. Quantitative Determination of Copper in a Penny by Atomic Absorption Spectroscopy Preparation of Penny for Analysis After weighing penny, put it in a 125 mL Erlenmeyer flask. Dissolve
UNC Wilmington - CHM - 435
Ion Chromatography (IC) Read section 28F in your lecture textbook (pp. 750-755) and background material on conductance (pp. 58-63 lab text). Make sure you have enough eluent and regenerant solutions prepared from Milli-Q water. The eluent is prepared
UNC Wilmington - C - 445
UNC Wilmington - CHM - 102
CHM 101/102Qualitative Analysis: Group IGeneral Chemistry 101/102 Laboratory Manual University of North Carolina at WilmingtonLaboratory ManualCHM 101/102Qualitative Analysis: Group IPurpose To study the chemical properties of Ag+, Pb2+
UNC Wilmington - CHM - 102
CHM 101/102Molecular Weight Determination of Butane GasGeneral Chemistry 101/102 Laboratory Manual University of North Carolina at WilmingtonLaboratory ManualCHM 101/102MW Determination of Butane GasPurpose Determine the molecular weigh
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UNC Wilmington - CHM - 102
CHM 101/102KineticsGeneral Chemistry 101/102 Laboratory Manual University of North Carolina at WilmingtonLaboratory ManualCHM 101/102KineticsPurpose To determine the rate law and the value of the reaction rate constant for a chemical re
UNC Wilmington - CHM - 102
CHM 101/102Temperature and Reaction RateGeneral Chemistry 101/102 Laboratory Manual University of North Carolina at WilmingtonLaboratory ManualCHM 101/102Temperature and Reaction RatePurpose To study the effect of temperature on the rea
UNC Wilmington - CHML - 445
Transition metal coordination compounds often contain unpaired d electrons. Whether or not the d electrons are paired, depends on the number of d electrons, the magnitude of d orbital splitting, and the geometry of the ligands around the metal. The m
UNC Wilmington - CHML - 445
Operation of Evans-Johnson Matthey Magnetic Susceptibility Balance1 1. Turn the RANGE knob on the balance to x1 and allow balance to warm up for 30 minuntes. 2. Adjust the ZERO knob until the display reads 000. Zero should readjusted if the range is
UNC Wilmington - CHM - 435
Fluorescence Lab A. Excitation and emission spectra By inspecting the fluorescence of 2 g/mL quinine in 0.05 M H2SO4 caused by the hand held UV source, determine an approximate emission wavelength to use in measuring the excitation spectrum of quinin
UNC Wilmington - CHM - 435
Fluorometric Determination of H2O2 in Water This method to determine H2O2 is based on the reaction of scopoletin, a highly fluorescent molecule, with H2O2 to produce a non fluorescent product. An important aspect of the method is that the reaction is
UNC Wilmington - CHM - 435
Question 14-12 b, 3 measurements of unknownx 4.00 10.0 16.0 24.0 32.0 40.0 y 0.160 0.390 0.630 0.950 1.260 1.580 x^2 16 100 256 576 1024 1600 0 0 0 3572 y^2 0.03 0.15 0.4 0.9 1.59 2.5 0 0 0 5.56 x*y 0.64 3.9 10.08 22.8 40.32 63.2 0 0 0 140.94 ss(res
UNC Wilmington - CHM - 435
Washington - PHYS - 431
Name: Modern Physics Lab Presentation Questionnaire In the space below, and on the back if necessary, write short (2-3 sentence) answers to any three of the questions below. Please circle the numbers of the questions you answer. 1. What is the essen
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Nuclear Magnetic Resonance1 BackgroundWhat we call &quot;nuclear magnetic resonance&quot; (NMR) was developed simultaneously but independently by Edward Purcell and Felix Bloch in 1946. The experimental method and theoretical interpretation they developed i
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Bowling Green - CS - 2510
Bowling Green - CS - 2510
Bowling Green - CS - 2510