reason for making the levels of water the same inside and outside of the Erlenmeyer flask while it was submerged in cold water? The reason for making the levels of water the same inside and outside of the Erlenmeyer flask so that the atmospheric pressure inside the Erlenmeyer flask is equal to the outside. 3. What are the possible sources of error of this experiment? • The water level in the flask is not the same with the outside. • The Erlenmeyer flask wasn’t
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atmosphere and release ______ to the atmosphere. Answer Selected Answer: b. carbon dioxide..............oxygen Correct Answer: b. carbon dioxide..............oxygen Question 13 1 out of 1 points The source(s) of atmospheric aerosols is (are) Answer Selected Answer: e. All of these are correct. Correct Answer: e. All of these are correct. Question 14 1 out of 1 points The solar wind Answer Selected Answer: d. All of the above
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and the volume. 7. Cool the beaker until the temperature reaches 50oC recording the temperature and volume every 5oC. 8. When the beaker reaches 50oC add ice to cool it to 0oC. Record the gas volume and temperature. Observations: |Atmospheric Pressure |770.5 mmHg | |Height of Water above Gas |50 mmH2O
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M07/4/PHYSI/SP3/ENG/TZ1/XX+ IB DIPLOMA PROGRAMME PROGRAMME DU DIPLÔME DU BI PROGRAMA DEL DIPLOMA DEL BI 22076512 physics sTANDARD level pApeR 3 Candidate session number Thursday 3 May 2007 (morning) 0 1 hour 0 INSTRUCTIONS TO CANDIDATES • • • • Write your session number in the boxes above. Do not open this examination paper until instructed to do so. Answer all of the questions from two of the Options in the spaces provided. At the end of the examination
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This page intentionally left blank SEPARATION PROCESS PRINCIPLES Chemical and Biochemical Operations THIRD EDITION J. D. Seader Department of Chemical Engineering University of Utah Ernest J. Henley Department of Chemical Engineering University of Houston D. Keith Roper Ralph E. Martin Department of Chemical Engineering University of Arkansas John Wiley & Sons‚ Inc. Vice President and Executive Publisher: Don Fowley Acquisitions Editor: Jennifer Welter Developmental Editor:
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An Arrangement to Ensure Optimum Temperature of Traffic Police Booth K. Augustine Babu and P. Sherjin Department of Mechanical Engineering‚ Sri Ramakrishna Institute of Technology‚ Coimbatore‚ Tamil Nadu‚ India Abstract The temperature of the traffic police booth is found to be at an elevated level during hot sunny days‚ which may cause discomfort to the person who is standing under it. Lowering this high inside temperature of the booth is the central theme of this work. Semi-conductor
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within the space when a new source of oxygen is introduced. The introduction of oxygen results in an immediate smoke explosion. Boiling point (BP) The temperature where a liquid will convert to a gas at a vapor pressure equal to or greater than atmospheric pressure. British thermal unit (BTU) The amount of heat required to raise the temperature of one pound of water one degree Fahrenheit. Class A fires Fires involving ordinary combustibles. Class B fires Fires involving flammable liquids
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incidentally leads to another important definition‚ the colligative properties of a solution. This means a particular set of characteristics that are unique to that solution. As the freezing point of the solution decreases‚ the solution then attains atmospheric
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References: Internet: http://en.wikipedia.org/wiki/Exothermic_reaction http://www.s-cool.co.uk/a-level/chemistry/chemical-energetics/revise-it/enthalpy-changes http://chemwiki.ucdavis.edu/Physical_Chemistry/Thermodynamics/State_Functions/Enthalpy/Heat_of_Reaction Chapter Yew Lee‚ Loh. 2004.Chemical energetics. STPM Physical Chemistry Volume 2‚ ed N.Sivaneson. 349 & 350. Selangor ; Penerbitan Pelangi SDN. BHD. You Sie‚ Lim. 2007.Thermochemstry. In Pre-U Text STPM
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A TECHNICAL REPORT ON PHASE CHANGE MATERIALS & SOLAR WATER HEATING USING PHASE CHANGE MATERIALS INDEX 1. Introduction 2. Types of Phase Change Materials 3. Selection criteria 4. Principle of solar water heater with phase change materials 5. Heat transfer analysis between water and PCM’s 6. Results 7. Conclusion CHAPTER – 1 INTRODUCTION PHASE CHANGE MATERIALS: The materials which undergo either boiling or condensing by absorbing heat from a medium or liberating
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