Investigation 12: Using Thermodynamic Quantities Through Calorimetry to Determine the Ideal Compound for Hand warmer Author: Jane Kim (B2) Partners: Jenny Kim‚ Jeffrey Heo‚ Eugenia Lee Experiment date: March 2‚ 2017 Table of Contents 1. Abstract 3 2. Introduction 3 3. Experimental details 4 3-1. Materials 4 3-2. Apparatus 7 3-3. Procedure 7 3-4. Special Precautions 8 3-5. Lab techniques 9 4. Results 9 5. Discussion 14 6. Conclusion 16 7. References 17 1. Abstract This lab report discusses
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Accepted Manuscript Title: Kinetic studies of the Decomposition of Flame Retardant Containing High Impact Polystyrene Authors: Guido Grause‚ Jun Ishibashi‚ Tomohito Kameda‚ Thallada Bhaskar‚ Toshiaki Yoshioka PII: DOI: Reference: To appear in: S0141-3910(10)00062-5 10.1016/j.polymdegradstab.2010.02.008 PDST 5967 Polymer Degradation and Stability Received Date: 17 December 2009 Revised Date: 2 February 2010 Accepted Date: 7 February 2010 Please cite this article as: Grause G‚ Ishibashi J‚ Kameda
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reprocessed into new materials bound for manufacturing. In the strictest sense‚ recycling of a material would produce a fresh supply of the same material—for example‚ used office paper would be converted into new office paper‚ or used foamed polystyrene into new polystyrene. However‚ this is often difficult or too expensive (compared with producing the same product from raw materials or other sources)‚ so "recycling" of many products or materials involves their reuse in producing different materials (e.g
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Experiment 1 Part B: Impact Strength Group Number: Group 1 Discussion General Purpose Polystyrene (GPPS) No. | Width(A)‚ mm | Thickness(W)‚mm | Energy‚ J | Joules/Fracture Surface‚ J/m² | 1 | 11.16 | 3.27 | 0.110 | 3014.26 | 2 | 11.17 | 3.28 | 0.116 | 3166.15 | 3 | 11.17 | 3.27 | 0.107 | 2929.43 | High Impact Polystyrene (HIPS) No. | Width(A)‚ mm | Thickness(W)‚ mm | Energy‚ J | Joules/Fracture Surface‚ J/m² | 1 | 11.06 | 3.28 | 0.295 | 8131.92 | 2 | 10.89 | 3.25 | 0.251 | 7091
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linear and syndiotactic polypropylene is more likely to crystallize since linear polymers are more likely to crystallize than crosslinked ones. (c) Network phenol-formaldehyde; linear and isotactic polystyrene. Yes‚ it is possible to decide for these two polymers. The linear and isotactic polystyrene is more likely to crystallize than network phenol-formaldehyde. (d) Block poly (acrylonitrile-isoprene)
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Where to Begin: the Chicken or the Egg? White‚ round‚ smooth are picturesque descriptions of an egg. An egg has a simple exterior that is easy to describe. However‚ this simple egg has a complex ecological footprint that contributes to the destruction of our planet‚ people‚ and prosperity. Eggs are essential to every dimension of the earth. An egg is a nutritious source protein and vitamins‚ triggering the performance of health maintenance in humans. Not only are eggs an exceptional source of
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will use a simple calorimeter to determine the enthalpy change of neutralization for the pairs of acid and base given. Apparatus and Materials: 1.0mol dm-3 sodium hydroxide solution‚ 1.0 mol dm-3 hydrochloric acid‚ 1.0 mol dm-3 ethanoic acid‚ polystyrene cup with lid‚ thermometer‚ two 50.00cm3 measuring cylinders‚ stopwatch‚ three 80cm3 beakers‚ dropper Variables: Manipulated variable: Type of acids used In this experiment‚ type of acids used would be manipulating variable. Different acids such
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If We Had Known About Green Chemistry In 1951‚ How Would Things Be Different Today? Green Chemistry is the making of chemical products that reduces or eliminates the use and production of hazardous substances in the designing‚ making‚ and use of chemical products. It involves the designing and re-designing of chemical creation and chemical products to prevent pollution which will therefore solve environmental problems. Green Chemistry is environmentally safe and has very little side effects on
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When manufactured‚ the chemicals being produced contain different hydorflurocarbons which are chemical compounds that has the ability to deplete the ozone layer and play a role in affecting global warming for worse. More so‚ the production of polystyrene produces high quantities of excess liquid‚ solid‚ and foam waste that is wrongfully disposed of into the water systems. Due to the low cost of production‚ light weight travel‚ and various functionalities‚ styrofoam may seem like a superior method
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potassium carbonate. Controlled Variables: 1. Volume of HCl ± 0.5 cm3 (± 2%) 2. Concentration of HCl‚ 3. Same mass of K2CO3 and KHCO3 within specified ranges of 2.5 – 3.0g and 3.25 – 3.75g respectively 4. Same calorimeter used i.e. polystyrene cup is used in this experiment 5. Same thermometer will be used ± 0.10K 6. Same source of K2CO3‚ KHCO3 and HCl Raw Data Results: The raw data table shows‚ the temperatures at initial point‚ after and the change in temperature of the reaction
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