change will be. The experiment is as follows‚ 1) Zn(s) + CuSO4(aq) ZnSO4(aq) + Cu(s) 2) Zn(s) + Pb(NO3)2(aq) Zn(NO3)2 (aq) + Pb(s) Both of the solutions will be in 1mol.dm-3 Apparatus: Distilled Water Polystyrene Cup Polystyrene Lid for cup Thermometer 1mol.dm-3 Copper Sulphate Solution 1mol.dm-3 Lead Nitrate Solution Zinc 25cm3 Measuring Cylinder Safety Goggles Balance Readings For this experiment the readings that you will need to take are the starting
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Strength Report | Materials in Practice CP4088/CP8011 | By Clinton Chang | Synopsis This experiment is to find out the tensile strength of different plastic materials. The four plastic materials used are General Purpose Polystyrene (GPPS)‚ High Impact Polystyrene (HIPS)‚ High Density Polyethylene (HDPE) and Polypropylene (PP). By using three samples from each plastic material type‚ we are able to obtain the mean tensile strength‚ mean tensile modulus and mean yield strength of each material
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A Comparison of Two Advertisements The Oxford dictionary definition of ‘advertise’ is: “To promote (goods or services) publicly to increase sales.” But is it more than that? I think that the meaning of advertising is forever changing‚ as the consumer becomes more demanding and the producer becomes more ‘devious’ in the ways they promote the product they are trying to sell. Now‚ I believe that advertising means: trying to sell products to people whether or not they set out to buy them in the first
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Nelson‚ Peter Glascor‚ Eric Flowr was to determine the identity of the unknown polymer by comparing its properties to properties of other known polymers. Most likely‚ the part is one of the five following polymers: polyethylene‚ polypropylene‚ polystyrene‚ polycarbonate‚ poly(vinyl chloride). These are all extremely common‚ and have widespread applications in industry. Each of these polymers exhibits properties which allow it to be of unique technological importance. Theoretical values for the
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and to CaO‚ and then‚ through some calculations and the equation = M * C * can the enthalpy of the decomposition of calcium carbonate be found. CaCO3 + 2HCl ( CaCl2 + CO2 + H2O CaO + 2HCL( CaCl2 + H2O These two reactions will be done in a polystyrene beaker so no heat is released. But for the second reaction above‚ the opposite of the value obtained for the must be added to the of the first reaction because that is what will give the of the decomposition of calcium carbonate as can be seen
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method to measure the intrinsic viscosity of the prepared polystyrene. Intrinsic viscosity‚ which is measured from the flow time of a solution through a simple glass capillary‚ has considerable historical importance for establishing the very existence of polymer molecules. The aim of this lab is to estimate the molecular weight of a polystyrene sample by dilute viscometer. The viscosity average molecular weight is determined for polystyrene obtained from bulk process and solution process. The result
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radical polymerization of styrene using solution process and bulk process. It demonstrates specifically with the polymerization of styrene monomer to form polystyrene (PS). This lab was also intended to show the difference between solution process and bulk process and how it affects the yield and appearance of the final product. Polystyrene is a major polymer used for a wide variety of commercial applications‚ and a vast majority of this polymer is synthesized via free-radical polymerization
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PRACTICE (CP4088) (a) Synopsis The main objective of tensile testing is to determine the tensile strengths and tensile modulus of different materials. Specimens that would be used are General Purpose Polystyrene (GPPS)‚ High Impact Polystyrene (HIPS)‚ High Density Polyethylene (HDPE) and Polypropylene (PP). The thickness of each specimen must be measured and recorded before being placed on the tensile testing machine. Once a specimen is placed on the tensile testing
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In this experiment I will investigate the temperature of 50cm³ of water before and after I have added calcium chloride‚ I will gradually increase the amount of calcium chloride by 1 gram to see if there is a significant change. When Calcium Chloride is mixed with water it performs an exothermic reaction which makes new bonds between the salt (Calcium Chloride) and the water. This will therefore make the solution of the reaction increase in temperature. Exothermic reactions transfer energy
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78446 EST CE71 EcoBuild 4pp-V3:EST 20/08/2010 09:32 Page 1 CE71 Insulation materials chart Thermal properties and environmental ratings 78446 EST CE71 EcoBuild 4pp-V3:EST 20/08/2010 09:32 Page 2 02 03 Insulation materials chart This chart details the thermal conductivities‚ environmental ratings and typical applications of insulation materials available in the UK. It is designed as an aid to specification. Note that the coloured cells indicate only the most common uses
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