DEPARTMENT OF CHEMISTRY TITLE: ANALYSIS OF COPPER IN BRASS BY UV-VISIBLE SPECTROSCOPY NAME: OPOKU ERNEST DATE: 21ST JANUARY‚ 2014 Page 1 of 9 TITLE: ANALYSIS OF COPPER IN BRASS BY UV-VISIBLE SPECTROSCOPY AIMS AND OBJECTIVES: By the end of this experiment‚ the student should be able to demonstrate the following proficiencies: 1. To determine the percentage of copper in brass by UV-visible spectroscopy. 2. Properly calibrate and use a spectrophotometer. 3. Convert percent
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X-ray Absorption Spectroscopy X-ray absorption spectroscopy (XAS) techniques probe short- and medium-range order‚ yielding information on bond lengths‚ coordination numbers‚ local coordination geometry and the oxidation state of atoms for a wide range of solid and liquid systems. XAS experiments require an intense‚ tunable photon source only available at synchrotrons. Features • medium and high energy (from atomic number Z=20 upwards) XAS‚ XANES (x-ray absorption near-edge structure)
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Infrared and Thermal Imaging Systems Market - Forecasts & Analysis 2014-2019 On 25th MAR. 2014 In 2014‚ the infrared and thermal imaging market is estimated at a value of US$3‚350 million‚ and by 2019‚ the industry is forecasted to expand to a total of US$5‚219.21 million. During the period of 2014 to 2019‚ the global market is expected to grow at a CAGR of 9.27%. The infrared and thermal imaging systems market mainly depends on the military sector. But the military budget cuts in the U.S. and
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Absorption Spectroscopy Abstract: Absorption spectroscopy validated Beer-Lambert’s Law‚ confirming Beer-Lambert’s Law was a successful method in determining the molar concentration of a sample within a composition that is unidentified. Absorption spectroscopy is used in order to determine the ε value; ε was calculated to be .0566. Introduction: The purpose of the Absorption Spectroscopy experiment is to evaluate the reliability and accuracy
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Arene Molybdenum lab Introduction: Organometallic chemistry is the study of chemical compounds that contain carbon atoms bound to a metal atom. Organometallic compounds can contain main group elements‚ or more metallic elements such as zinc or carbon. These compounds tend to have carbon atoms bound to the metal center by σ-bonds. Alternatively‚ transition metals can be involved in the compound‚ which leads to a variety of interesting and diverse chemical characteristics. For example‚ a promising
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Lab Report Preparation Guidelines—IR Spectroscopy‚ General Unknowns‚ CH 315. Introduction/Purpose State in simple terms what the purpose was. Since one is issued a vial of an unknown substance‚ the “purpose” as such is not exactly in doubt. The object is simply to state that obvious purpose‚ as well as summarize (a comma-ed list here is fine) the various means‚ tests‚ so forth that are performed in the approximate order that they are performed. (approximately 10 points) Experimental
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Introduction Atomic Absorption Spectrometer (AAS) is an analytical equipment commonly used for the detection of heavy metals in particular sample. The first step to analysis in the AAS is the atomization of the desired element by converting it to a gaseous state. The atoms then absorb the energy emitted from the hollow cathode lamp corresponding to the desired element and a detector reads the signal and records the results. The results may be used quantitatively or qualitatively depending on the
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(III) chloride‚ pentaaminenitritocobalt (III) chloride‚ and pentaaminenitrocobalt (III) chloride were synthesized and isolated. From the ultraviolet-visible spectrum‚ infrared spectrum‚ and molar conductivity each compounds was distinguished and characterized to show fundamental differences between the three. Furthermore‚ IR spectroscopy is suitable for distinguishing between the nitro- and nitrito-linkage isomers because they have different vibrational patterns from one another. Given enough time‚
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Comparing these values with the literature melting point of 262 - 264°C shows that the product was indeed 9‚ 10-dihydroanthracene-9‚ 10-α‚ β-succinic anhydride and that recrystallization yielded a purer product. Upon examination of an infrared spectrum of the product and comparison with anthracene and maleic anhydride spectra‚ it was found that the product spectrum had similarities with both the anthracene spectrum and the maleic anhydride spectrum. This indicated that the product was
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Cited: 1. National Research Council. 1996. National Science Education Standards. Washington D.C.: National Academy Press. 2. John Vassallo (ed) 1995 Special issue on synchrotron infrared spectroscopy Synchrotron Radiation News 8. 3. R. L. Brunelle and Reed 1984 Forensic Examination of ink and Paper (Charles C. Thomas Pub Ltd‚ Springfield). 4. R. Saferstein (ed) 2001 Forensic Science Handbook (Volume 1) (Prentice Hall‚ New Jersey) 2nd
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