Chemical Education Today Especially for High School Teachers by Erica K. Jacobsen Chemistry in My Kitchen The Jacobsen kitchen is an unusual place. The atmosphere is often more “mad scientist” than “gourmet chef ”. Testing JCE Classroom Activity procedures at home brings an eclectic collection of materials to our counters. Our toaster competes for space with a collection of funnels made from 2-liter plastic beverage bottles and rubber stoppers (1). Baking soda from my shelf joins citric acid
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Introduction In this lab‚ the purpose was to verify Hess’s Law. Four main topics were covered during this experiment including enthalpy of reaction‚ heat of formation‚ Hess’s Law‚ and calorimetry. The enthalpy of reaction‚ ΔHrxn is the heat or enthalpy change for a chemical reaction. The energy change is equal to the amount of heat transferred at a constant pressure in the reaction. The change represents the difference in enthalpy of the products and the reactants and is independent of the steps
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Course Content: |Wk |Date |Topic |Homework |Due | |1 |8/26 Lec |Ch. 1 Chemical Foundations | | | | |8/26 Lab |Safety Video‚ Lab Check-in |Exp. 2 Advanced study assignment (ASA2) | | |
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Data and Observations : Part I: Insert a complete data table‚ including appropriate significant figures and units‚ in the space below. Also include any observations you made over the course of Part I. Metal Aluminum Zinc Iron Cooper Mass of metal 27.776 g 41.664 g 34.720 g 41.664 g Volume of water in calorimeter 26.0 mL 26.0 mL 26.0 mL 26.0 mL Initial temp. of water in calorimeter 25.3 degrees C 25.3 degrees C 25.3 degrees C 25.3 degree’s C Temp of hot water and the metal
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MADALANG‚ Kyle Marron A. kyle.madalang@yahoo.com E302: Heat and Calorimetry METHODOLOGY The experiment was conducted following a two part procedure as follows. In the first part‚ the procedure aims to determine the specific heat of metals‚ specifically‚ the brass and aluminum‚ both undergone the following procedure‚ irrespective of their kind to which shall be used first. First‚ the mass of the metal ()‚ the inner calorimeter () and the water () in the calorimeter in grams was determined through
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3.5.3 X-Ray Diffractometery (XRD). The crystallinities of pure Zolmitriptan‚ excipients and liquisolid system were evaluated by XRD measurement. It has been seen that polymorphic changes of the drug are important factors‚ which may affect the drug dissolution rate and bioavailability(135). The X- ray diffractogram of pure Zolmitriptan Figure (25) exhibited several sharp peaks at different angle (2Ɵ)‚the three strongest angles were 19.2 Ɵ‚ 21.9 Ɵ and 23.8 Ɵ ‚other angles were 12.2 Ɵ‚13.7 Ɵ‚ 14.2
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23rd Annual Conference on Recent Advances in Flame Retardancy of Polymeric Materials Chairman: Charles Wilkie Marquette University Featuring An Intensive Short Course in Selection‚ Evaluation‚ and Commercial Application of Flame Retardants May 20‚ 2012 Main Conference May 21-23‚ 2012 Sheraton Stamford Hotel Stamford‚ CT USA Contact: Chris Ross - Conference Coordinator Phone: 866-285-7215 X 606‚ 781-205-2433 Email: chris.ross@bccresearch.com bcc Research Market Forecasting BCC
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Measuring the Respiratory Quotient Table 1 Representing the raw data of the Gas Pressure(kPa) in an enclosed environment during respiration of mung beans and sunflower beans with and without soda lime. Time in seconds(+/-1) | Mung Beans(+/-0.01kPa | Mung Beans with Soda Lime (+/-0.01kPa) | Sunflower Beans(+/-0.01kPa | Sunflower with Soda lime(+/-0.01kPa | 0 | 100.97 | 103.29 | 100.97 | 100.93 | 50 | 100.49 | 102.85 | 100.45 | 100.48 | 100 | 100.07 | 102.51 | 99.89 | 100.07 | 150
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activity because after your done with a workout or activity you can directly write it down and keep track of how long you were active and how many calories you burned. c. Two instruments that would not work to provide useful information would be a calorimetry and motion detector because they are expensive and require a professional‚ where a regular person could not use them every day to monitor their physical activity. They can also be ineffective and not provide accurate results. d. A research study
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Synthesis of terpolymer PLGC: The terpolymer PLGC was synthesized using a reported procedure with a starting monomer ratio of 70:20:10 of L-LA‚ GL and Ɛ-CL respectively using the catalyst tin(II)2-ethyl hexanoate. The chemical reaction is given in the figure1. The yield % of the synthesized polymer was calculated by the equation: Yield %= (Weight of synthesized polymer)/(Weight of the monomers taken) ×100 Characterization of synthesized polymer: Chemical analysis using Fourier transform infrared
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