Victor Lee CHEM 113 4/5/2013 The Spectroscopy of Interstellar Anions Dr. Ryan Fortenberry presented about one of the greatest mysteries in spectroscopy‚ which involved these diffuse interstellar bands spectra of space. No one has been able to conclusively determine these specific bands‚ but after thought‚ Fortenberry speculated that these could potentially be absorption bands of anions due to various other observations from previous reports about these findings. Fortenberry ran calculations
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and Castellucci 2000). Examples are the introduction of lasers‚ Fourier transform (FT) Raman‚ charge-coupled device (CCD) detectors‚ confocal Raman spectroscopy and fiber-optics‚ that allowed conservation scientists to record molecular spectra of minute samples or directly from the art object. Case study Red pigment samples were collected from the early Christian necropolis of El-Bagawt at Kharga Oasis‚ Egypt. El-Bagawat necropolis is dating back to the 4th century AD. Two of the most outstanding
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of the line was found to be y=0.1765x + 0.0705. It was then determined that there was no iron present in water sample A‚ while for water sample B‚ the iron was present in the proportions of 0.9037ppm‚ 1.614x10-5M and 9.037x10-3%. Introduction: Spectroscopy is the study of the interaction of light or electromagnetic radiation with matter. Spectrophotometry is any technique that uses light to measure chemical concentrations. Electromagnetic radiation is a form of energy when reacted with matter‚ can
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The average University student has many tasks to accomplish and much studying to do while combating the onslaught of sleep. Students at the University of the West Indies Mona are no different and recommended amongst themselves a highly rated and popular health supplement “Yeast-Vite” [8]. Yeast-Vite is a health supplement pill which helps people fight fatigue and improve alertness. The active ingredients in Yeast-Vite are caffeine‚ vitamin B1‚ vitamin B2‚ vitamin B3. The other ingredients are:
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Lab 6 Prelab Spectrophotometry This is due at the beginning of lab 6. Read the lab protocol for this week and type your individual answers to the following questions. Each student should turn in answers at the beginning of class. You may consult other resources (textbook‚ library‚ etc.) Remember to cite information and put responses in your own words to avoid plagiarism (and loss of credit on the assignment). 1. Refer to step 2 in the protocol for lab 6. Calculate the concentration of the sample
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Study Guide: Exam 1 1. What type(s) of molecular motion is (are) observed using infrared spectroscopy? A. Stretching and bending B. Rotation and excitation C. Spin flipping D. Fragmentation 2. The functional group region of an infrared spectrum is A. where the cations appear. B. >1500 cm-1. C. <1500 cm-1. D. >2500 cm-1. 3. Stronger bonds will be found where in the infrared spectrum? A. Higher molecular weight B. Lower molecular weight C. Lower wavenumbers D. Higher wavenumbers 4. Compared
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DATE PERFORMED: JULY 20‚ 2007 SPECTROPHOTOMETRIC DETERMINATION OF EQUILIBRIUM CONSTANT FOR A REACTION ABSTRACT UV-VIS spectrophotometry is one of the most widely-used methods for determining and identifying many inorganic species. During this experiment‚ this spectrophotometry was used to determine the equilibrium constant‚ Keq‚ of the Fe3+(aq)+SCN-(aq)↔ FeSCN2+(aq) reaction. By determining the amount of light absorbed‚ the concentration of the colored FeSCN2+ solution was also quantitatively
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Abstract Density functional theory (DFT) calculations have been used to investigate the structural properties‚ dipole moments‚ polarizabilities‚ Gibbs energies‚ hardness‚ electronegativity‚ HOMO/LUMO energies‚ chemical potentials‚ density of states and detonation properties of trans and cis configurations of azocubane. All properties have been obtained using the B3LYP functional and 6-31G(d‚p) basis set. Also‚ IR‚ UV-Vis‚ CD and NMR spectra of the structures were simulated. The volumes of the structures
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plenty of other nourishable foods which indicate to the archaeologists and scientists that Lindow Man was not poor and was possibly from the middle to upper class. Another scientific technique that was used was the use of electron spin resonance spectroscopy which revealed Lindow Man had eaten burnt griddle cake as his last meal. Also through using Atomic Absorption Spectrometry‚ scientists concluded that Lindow Man must have been wearing body paint when he died as he had a high concentration of copper
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utilized to compare its absorbance to the unknown sample of limestone # 8066 on the standard curve. Moreover‚ magnesium sulfate heptahydrate (MgSO4*7H2O‚ CAS: 10034-99-8‚ 40.8ppm) was also utilized to compare its absorbance against that of the unknown. Lab personnel from the CSU Eastbay department of chemistry stockroom performed all calibrations on the Perkin Elmer AAnalyst 300 atomic absorption spectrometer. All chemicals used in this experiment were obtained from the CSU Eastbay department of
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