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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The atomic bomb‚ a powerful weapon‚ launched an already weary world into a state of paranoia and political tension. This discovery‚ while spectacular in its own right‚ caused a need for new international laws. For safety reasons‚ a weapon of mass destruction cannot exist without regulations. Constant danger of instant death and nuclear explosions provoked more hostility than World War II itself. Without any defense against this cataclysmic force‚ the world was in desperate need for reassurance. The
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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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‘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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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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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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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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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 Structure & Electricity 1. Draw an atom with an atomic number of 12. Label the protons‚ neutrons‚ and electrons. Use the periodic table to identify which atom you have drawn. 2. How many valence electrons are present in this atom? 2 3. Would this atom prefer to gain or lose electrons? Why? Lose‚ because the octet rule dictates that if there is less than 4 valance electrons‚ they would prefer to leave the atom. 4. Describe the differences between conductors‚ semiconductors
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Can too much of something good be bad for you? What if it kills you? Harm you physically‚ or even mentally? As we all know to this day‚ technology has advanced in ways we can’t even comprehend. New concepts of technology are being released every year and people buy them without taking the opportunity and time of getting to know the product. Most people don’t acknowledge the harm that the product can do to us human. (you can preview what you’ll talk about in your intro) There is no American that
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