Eric Klinenberg‚ assistant professor of sociology at New York University (formally of Northwestern University)‚ wrote "Heat Wave: A Social Autopsy of Disaster in Chicago" in order to further investigate the devastating Chicago heat wave of 1995. From July 13h to July 20th‚ the heat led to over 700 deaths and thousands being hospitalized due to heat related illness. Following the catastrophe‚ there have been numerous medical‚ meteorological‚ and epidemiological studies done examining the reasons for
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layer temperature distribution at a given location on the plate may be approximated as T = 30 + 70 exp ( −y ) where y (in m) is the distance normal to the plate and T is in °C. If thermal conductivity of the fluid is 1.0W/mK‚ the local convective heat transfer coefficient (in W/m2K) at that location will be (A) 0.2 7. (B) 1 (C) 5 (D) 10 A frictionless piston-cylinder device contains a gas initially at 0.8MPa and 0.015 m3. It expands quasi-statically at constant temperature to a
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Molar Heat of Combustion Aim: To find the molar heat of combustion for four different alkanols: 1. Methanol 2. Ethanol 3. 1-Propanol 4. 1-Butanol - And to compare the experimental value with the theoretical. Background: The Molar Heat of Combustion of a substance is the heat liberated when 1 mole of the substance undergoes complete combustion with oxygen at standard atmospheric pressure‚ with the final products being carbon dioxide gas and liquid water. (Ref. “Conquering Chemistry‚ Roland
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the water would need a set amount of energy to break through the changes in matter. This is why temperature slows down in these phase changes. 2. When the ice is melting is it releasing heat or absorbing heat? Explain your answer. It is absorbing heat as it tries to achieve thermal equilibrium with the incoming heat. The water has more energy‚ which is why the water goes to a more easy to move around “phase” form from
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Experiment to measure the latent heat of vaporisation of water Theory Latent heat of vaporisation is when a liquid is heated enough to start boiling‚ at this point‚ even if the source of heat keeps heating the liquid‚ the liquid’s temperature will not rise any further until all of the liquid is converted to gas. For example‚ if water is boiling in a kettle‚ and the kettle is left on whist the water is boiling‚ the water’s temperature will not exceed 100°C because all the heat energy from the kettle is
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Heats of Reaction Lab Report Purpose: To measure the heats of reaction for three related exothermic reactions and to verify Hess’s Law of Heat Summation. NaOH(s) ( Na+(aq) + OH-(aq) ΔH = -10.6kcal/mol NaOH(s) + H+(aq) + Cl-(aq) ( H2O + Na+(aq) + Cl-(aq) ΔH = -23.9kcal/mol Na+(aq) + OH-(aq) + H+(aq) + Cl-(aq) ( H2O + Na+(aq) + Cl-(aq) ΔH = -13.3kcal/mol Background: Energy changes occur in all chemical reactions; energy is either absorbed or released. If energy is released in
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In his essay‚ “I Just Wanna Be Average‚” author Mike Rose says‚ “students will float to the mark you set” (164). From my past experiences‚ I completely agree that students will work harder if their teachers set the standards high. Generally‚ teenagers do not have high goals or standards for themselves‚ so it is up to the teachers to encourage and push the students towards success. Throughout his excerpt‚ Rose shows through numerous examples that teachers are a vital part to a student’s success
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In the story‚ "I Just Wanna Be Average" the main character‚ Mike Rose‚ takes us through his years at Mercy High School during the 1960’s and 1970s. Although many people appear in this story‚ the main people are Ted Richard‚ Ken Harvey and Mr. Macfarland. Ted Richards was a bit of a dream‚ turning his back on the real world and just let his mind roam. Ted was always laughing‚ his loud and jolly voice booming out. Even when he’d get angry‚ he’d give a little smile. Ken Harvey became a central figure
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Vapor Pressure and Heat of Vaporization Introduction: Evaporation is the process of a liquid becoming vaporized. When a liquid is placed into a confined space some of the liquids will evaporate. Evaporation of the liquid depends on the strength of the intermolecular forces that are between liquid molecules. During the evaporation process of the liquid‚ new gas molecules exerts pressure in the sealed container‚ while some of the gas condenses back to the liquid state. If the temperature inside
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The Effects of Heat on the pH of the Vegetable and Their Pigment PURPOSE The purpose of this experiment is to see how pH levels of certain vegetables change while being cooked in four different mediums (frying‚ boiling‚ steaming‚ roasting)‚ and how the varying pH levels change the coloring of the vegetables. We will analyze how the different method of cooking/heating changes the levels of pH. BACKGROUND INFORMATION This experiment is based around the different pigments in vegetables‚ of which
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