U.S Dropped the Atomic Bomb in Hiroshima and Nagasaki? On August 6 and 9‚ 1945 the cities of Hiroshima and Nagasaki were destroyed by the first atomic bombs used in warfare. The United States decision to drop an atomic bomb on Hiroshima was strictly military measure calculated to intimidate the Soviet Union in the post-Second-World-War era rather than a strictly diplomatic measure designed to force Japan’s unconditional surrender. The three most important reasons to use the atomic bomb were; End
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properties of a material as a function of wavelength It involves with the use of a spectrophotometer. A spectrophotometer is a photometer that can measure intensity as a function of the light source wavelength. A spectrophotometer is commonly used for the measurement of transmittance or reflectance of solutions‚ transparent or opaque solids‚ such as polished glass‚ or gases. Principles A spectrophotometer is employed to measure the amount of light that a sample absorbs. The instrument operates
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SULFUR‚ CHLORINE‚ BROMINE AND IODINE Introduction AAS used as an analytical tool was first developed by an Australian physicist Alan walah Atomic spectrometric methods are rapid ‚convenient and have high selectivity The method involves a process called as atomization in which the sample is converted to a gaseous phase atoms or ions Atomic absorption spectroscopy is based on the same principle as the flame test used in qualitative analysis. When an alkali metal salt or a calcium‚ strontium or
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spectrophotometric analysis. Acidified solutions (using 0.1 M HCl) of FeCl3 and KSCN were prepared for the calibration of the UV-Vis spectrophotometer (using standard solutions) and the determination of Keq of the Fe(SCN)2+ formation (solutions with unknown concentrations). Absorbance readings of the standard and unknown solutions were obtained through the spectrophotometer. The equation of the trend line of the calibration curve (obtained through the plot of the absorbance readings vs. thiocyanatoiron
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160 A-Ultra-violet spectrophotometer in the range (200-1000) nm. Atomic absorption measurements of the prepared complex were obtained using Shimadzu 680cc-flame. The magnetic susceptibility values were obtained at room temperature using Magnetic Susceptibility Balance Bruke Magnet B.M.6. The 1H and 13C
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Kathleen Kramas Cells and Heredity Lab Tuesday 2:00-4:50 22 OCTOBER 2012 Membrane Permeability Decreases as Molecular Size Increases Introduction: Red blood cells are vital to organisms functioning properly. They are microscopic cells that carry oxygen from the lungs to all the tissues throughout the body. Upon transporting oxygen‚ red blood cells also exports waste‚ such as carbon dioxide‚ to the lungs where it can be expelled. Red blood cells are made up of hemoglobin which is surrounded by a
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Fluorescence Spectroscopy 1.4 Atomic Spectrometric Methods CHAPTER 2 Methodology 14 2.1 UV-Vis Spectroscopy 2.2 Fluorescence Spectroscopy 2.3 Atomic Spectrometric Methods CHAPTER 3 Results and Data Analysis 18 3.1 UV-Vis Spectroscopy 3.2 Fluorescence Spectroscopy 3.3 Atomic Spectrometric Methods CHAPTER 4 Discussions and Problem Solving 33 4.1 UV-Vis Spectroscopy 4.2 Fluorescence Spectroscopy 4.3 Atomic Spectrometric Methods
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HS1103- Engineering chemistry - I KINGS COLLEGE OF ENGINEERING Department of Science and Humanities Sub. Code: HS1103 Sem/Year: I / I Sub. Name: Engg.Chemistry-I UNIT – I – WATER TREATMENT PROCESS: PART – A ( 2 Marks) 1. Define hardness of water. 2. Distinguish between carbonate hardness and noncarbonate hardness. 3. Draw the structure of EDTA. What happens when EDTA is added to hard water? 4. Define alkalinity. 5. Why is water softened before using in boiler? 6. What is meant
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light on methylene blue and carmine red on the absorbance value on a spectrophotometer. A spectrophotometer is used to measure light intensity by emitting a single light source through a cuvette of coloured solution. The particles in the solution‚ which are coloured‚ absorb the light depending on how concentrated it is and this produces an electronic reading from the photometer which is the absorbance value. The maximum absorption was found for both solutions and was used to calculate the molar extinction
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A Study to Determine the Level of Iron and Copper in Kuala Terengganu Estuary Muhammad Ali Azraei Bin Raduan ( UK32844 ) Lecturer Dr. Kesaven a/l Bhubalan Introduction : Kuala Terengganu River estuary (5.32°-5.35°N‚ 102.95°-103.15°E) is situated on the east coast of peninsular Malaysia facing the South China Sea (figure 1). Generally‚ the Kuala Terengganu River estuary is relatively small and shallow. The total area of the estuary is approximately 8 km2
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