Experiment A Spectroscopic determination of Iron with Phenanthroline Unknown # 2 Mass of Mohr’s Salt: 0.2040 1. 5mL of 6M acetic acid was measured and transferred into a 100mL volumetric flask with a pipette and diluted to the mark. Concentration = [0.2040(±0.0001)g/100(±0.08)mL]*[(1mol/392.16g)/(1L/1000mL)] = 0.005202(±0.09382%) = 0.005202(±0.000005)mol/L 2. 10mL of the above stock solution was transferred to a 250 mL volumetric flask and diluted to the mark. Concentration
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3. RESULTS AND DISCUSSION 3.1. Powder X-Ray diffraction analysis The grown Cd doped LSMH crystal were subjected to powder X-ray diffraction studies using a Rich Seifert X-ray diffractometer employing CuKα (1.54058 Å) radiation‚ scanning angle ranging from 10° to 70° at a scan rate 1°/min to confirm the crystalline phase of the grown crystal. Fig 2 shows the X-ray powder diffraction patterns of pure as well as Cd doped LSMH single crystals. The obtained (h k l) values are indexed using the JCPDS
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Absorption Spectroscopy Author: Lab Partners: Instructor: Chem 152 Date Work Performed: Date Work Submitted: Abstract A Beer’s Law analysis was used to determine the molar absorptivity of a Red-40 food dye. Using a spectrometer‚ the best wavelength to use for the analysis of this dye was determined to be 501nm. A series of dilutions were performed and the concentrations were calculated to find ‘E‚’ the molar absorptivity‚ which was determined to be 18035 M-1 cm-1. Introduction
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Delhi Technological UniversiTy (Formerly Delhi College of Engineering) Shahbad Daulatpur‚ Bawana Road‚ Delhi-110042 Contents )) From)the)Desk)of)The)Vice)Chancellor).......................................................................))1-2 )) Message)from)the)Chief)Warden)..............................................................................))3 )) UGC)Regulations)on)Curbing)the)Menace)of)Ragging) ) In)Higher)Educational)Institute‚)2009)................................................
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References: A chapter from a book: Francis Rouessac and Annick Rouessac. Chemical Analysis: Modern Instrumentation Methods and Techniques 2nd edition. John Wiley & Sons. Ltd; 2007. Chapter 9‚ Ultraviolet and visible absorption spectroscopy; p.181-186 A chapter from a textbook: G H Jeffery‚ J Bassette‚ J Mendham‚ R C Denny. Vogel ’s Textbook of Quantitative Chemical Analysis 5th edition. Longman Scientific and Technical; 1989. Chapter 17‚ colorimetry and spectrophotometry; p. 645-651
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Panther ID: NAME: FLORIDA INTERNATIONAL UNIVERSITY Department of Chemistry CHM 2211-U02– ORGANIC CHEMISTRY II PRACTICE EXAM I CHM 2211-U01 SAMPLE EXAM I‚ Page 2 Type of Vibration C-H Frequency (cm-1) 3000-2850 1450 and 1375 1465 3100-3000 1700-1000 3150-3050 1000-700 ca. 3300 2900-2800 2800-2700 1680-1600 1600-1400 2250-2100 1740-1720 1725-1705 1725-1700 1750-1730 1700-1640 1810 and 1760 1300-1000 Intensity s m m m s s s m w w m-w m-w m-w s s s s s s s Alkanes -CH3 -CH2Alkenes
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MICRO-RAMAN ANALYSIS OF EARLY CHRISTIAN FRESCOES IN EGYPT Hussein H. Marey Mahmoud Laboratory of Mural Paintings Conservation‚ Department of Conservation‚ Faculty of Archaeology‚ Cairo University‚ P.O. 12613 Giza‚ Egypt‚ marai79@hotmail.com ABSTRACT The early Christian cemetery in Egypt is located at Kharga Oasis in the western desert. The cemetery consists of 263 mud-brick chapels dating back to the 4th century AD. In the present study‚ micro-Raman analysis was used to study micro samples from
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CC Bright red blood per rectum. Sinus pressure‚ sore throat. S The patient is a 62-year-old female who tells me that about a week ago she noticed bright red blood per rectum. She states she had a fairly normal stool‚ which was brown in color followed by drops of bright red blood into the toilet. She is quite certain this came from her rectum and not her vagina. She states the next day there was even a little bit more blood‚ and the third day continued. She then had several days where she did
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8. Terfenedine is an amino diol that is the active ingredient in the antihistamine Seldane. Mass spectral analysis of terfenedine shows a molecular ion at m/z = 471 and a peak at m/z = 472 which is 35.5% the height of the molecular ion. Terfenedine is known to contain C‚ H‚ O and N. (a) Suggest five molecular formulas for terfenedine. (b) Terfenedine has an even number of carbons and contains nine double bonds and four rings. Based on this additional information‚ what is the formula for terfenedine
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Determining the Absorbance Maximum Wavelength and Molar Extinction Coefficient to Find the Molarity of the Unknown DCPIP Background Information: A spectrophotometer is an instrument used to help determine the absorption spectrum of chemicals. It does this by reading the absorbance of the chemical at different wavelengths. All chemicals absorb light in their own distinct way. This distinction helps to identify unknown chemicals. The absorption of light within a chemical is also very important because
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