Chemistry of Bath Bombs Date: 16th May 2014 Introduction – When sodium bicarbonate and citric acid mix in water they dissolve‚ the sodium bicarbonate reacts with the citric acid to form sodium citrate and carbon dioxide. The carbon dioxide then bubbles out as a gas‚ which makes the bath bomb break up‚ in this experiment 3 tests will be conducted in order to find the correct ratio of bicarbonate soda and citric acid to create the
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people knew that dropping the bomb was a crucial piece to finish off the war. Because if they weren’t they would know that in result that it would end in a Japanese victory. The Americans dropped the bomb to finish the war and thus was necessary as a means to win‚ but the consequences were extreme. Looking past the consequences in the Japanese defense it led to thousands of their people dying to a fiery inferno. President Truman was the one that made the decision to drop the bomb‚ and the first citation
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Experiment B2‚ Heats of Combustion – The Bomb Calorimeter. Objectives: To calibrate a bomb calorimeter by the combustion of benzoic acid. Then to use the calibrated calorimeter to measure the heat of combustion of naphthalene and calculate the heat of formation of naphthalene. Theory: q = C.ΔTBA C = q / ΔTBA Moles = mass / Mr ΔŪ = ΔU / moles ΔHoc‚298 = ΔŪoc‚298 + PDV = ΔŪoc‚298 + RTΔn C10H8 (s) + 12O2 (g) 10CO2 (g) + 4H2O (l) ΔHoc‚298 = - 1
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Is Population Still a ‘Time Bomb’? By Rachael Cage In the face of uncontrolled population growth‚ international relations theorists have long regarded overpopulation as a serious challenge‚ which if mishandled could lead to a dire catastrophe. This paper will focus on Thomas Malthus and Paul Ehrlich who have been very influential in the population debate. Malthus established positive and preventative checks which naturally try to counteract the population increase and warned of an incapacity
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Determination of Trace Amount of Copper and Zinc in an Aqueous Solution by Atomic Absorbance Spectroscopy Abstract: The purpose of this experiment is to analyze a sample containing copper and zinc in trace amounts‚ where standard addition method was used and the instrument used is the atomic absorbance spectroscopy. The amount of copper obtained was 0.569 ppm ± 0.015 and for zinc we obtained 0.42 ppm ± 0.0027. Introduction: This method implies the excitation of particles in the solution sample
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Logann Stambaugh Mrs. Kohn English II 24 March 2014 Final Copy Atomic Bombing The bombings of Hiroshima and Nagasaki are still considered two of the most devastating bombings ever seen in mankind. There is uncertainty over the rationality and judgment of President Truman’s reasons for releasing the bombs‚ as well as the thought process on the mortality of the situation. However‚ there is no doubt that this was a difficult decision to make. The United States is still paying for this cataclysmic
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Causes and effects of dropping out of school Thinking about many issues in today’s society‚ there are many reasons an individual would drop out of school such as pregnancy‚ family concerns‚ and individual reasons. Most people know that education is important however‚ there can be many circumstances and/or situations that could prevent a person to drop out of school. One reason that came to mind was pregnancy. With me being a mother‚ I know the hardships and the problems that came come about after
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‘Atomic Diplomacy’: At Potsdam the President had seemed in a conciliatory mood toward the interests of the Soviet Union‚ traditional Russian concerns like those for an ‘ice free’ port were treated with an earnestness they didn’t deserve‚ and when it came to any serious measures like the fixing of borders post war‚ the American President would note that such important matters should rightly be postponed until the meeting of the “full peace conference” expected to take place sometime in the fall
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casted an aura of heavenly peace over its three hundred and fifty thousand inhabitants. That peaceful heaven‚ however‚ was about to be obliterated by a destructive new weapon created by the United States of America. That morning‚ the first nuclear bomb ever created was deployed over Hiroshima. Its virtually unimaginable power obliterated the entire city along with forty percent of its population within seconds. America succeeded in creating the most destructive weapon mankind had ever seen‚ and it
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Atomic Spectra Lab Purpose: The purpose of this lab was to identify the wave length and spectra of the two elements‚ mercury and hydrogen. The wavelengths of the two elements represent the characteristic energies of moving electrons. The spectra of the two elements are what side of the energy spectrum their wavelengths are on. Materials: • Hydrogen lamp • Mercury lamp • 2 diffraction devices • Flashlight • Paper • Pencil • Calculator Procedure: 1. Place
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