Materials 1 spectroscope 1 incandescent bulb 1 hydrogen gas discharge tube 1 mercury discharge tube 1 nitrogen gas discharge tube 1 fluorescent light 1 neon gas discharge tube Solar light source 1 discharge tube apparatus Procedure The procedure of using a spectroscope was practiced with a fluorescent light source. The slit was pointed towards the source‚ and the spectroscope was shifted until the spectrum was clearly visible. The appearance of the spectrum from the fluorescent light
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of a Rate Constant By Marvin Coleman March 7‚ 2011 Abstract: From the shown calculations & graphical analysis‚ the experimentally determined rate law is rate = K[I-].969 [H2O2].991 and the experimentally determined activation energy is 59.50 kJ/mole. Introduction: The rate of a reaction varies at different temperatures and reactant concentrations. In this experiment‚ the orders and dependence of the rate constant of the products used are determined by the following chemical reaction:
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safety goggles‚ gloves and lab coats. 2. Set up retort stand on the heat mat‚ and attach the boss head clamp. 3. Fill test tube with 7mL water and place in the clamp 4. Record the mass of the teddy bear and the energy in the teddy bear (per 100g and in KJ) 5. Put teddy on the miniature stand‚ and adjust the boss head clamp so that the test tube is 1cm away from the tiny teddy 6. Measure the temperature of the water using the thermometer and record the results 7. Light the tiny teddy using matches until
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First Law of Thermodynamics The first law of thermodynamics states that the energy cannot be created nor destroyed it can only be changed from one form to another. Another name for this law is the law of conservation of energy. This means that the total energy of a system plus its surroundings is constant and does not change. Energy can‚ however‚ be transferred in or out of the system and to or from the surroundings through work or heat. Conservation of Energy Energy may be defined as the
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which states that W ∝ H or W = J H The conversion factor between electric energy measured in joules and heat energy in calories is called the electrical equivalent of heat 1 cal(calorie) = 4.186J (joules) or Kj =4.186J/cal In this particular experiment we will reexamine the value of Kj. Other basic SI units involved in this experiment are: Coulomb ( c) : unit for electric charge Ampere(A) unit for electric current‚ flow rate of charge‚ A=C/s Volt(V) unit for electric potential‚ energy/coulomb
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EXERCISE 6 1. A shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25° downward from the horizontal. Find the work done by the shopper as she moves down a 50-m length of aisle. 1.6 kJ 2. A horizontal force of 150 N is used to push a 40.0-kg packing crate a distance of 6.00 m on a rough horizontal surface. If the crate moves at constant speed‚ find (a) the work done by the 150-N force and (b) the coefficient of kinetic friction between the crate and surface. 900J
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KLS G609: LIVESTOCK BIOCLIMATOLOGY AND ETHOLOGY • Livestock adaptation to environmental effects of heat‚ humidity‚ light‚ pressure and latitude. Biological rhythms and photo-periodism. • Effects of environment on Livestock reproduction‚ nutrition‚ and health. • Livestock ethology and physiological basis of Livestock behaviour‚ behaviour patterns including social behaviour and management of behaviour. • Livestock welfare and requirements in housing‚ transportation and slaughter‚ management
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Review paper. Catalysts analysis for MSW pyrolysis and gasification Tursunov Obida‚ Khairuddin Md Isaa‚ Dr. Ong Soon Ana aSchool of Environmental Engineering‚ University Malaysia Perlis UniMAP‚ Arau 02600‚ Perlis‚ Malaysia Abstract MSW pyrolysis and gasification are the possible alternative to the direct use of fossil fuel energy. MSW‚ a CO2 neutral source of renewable fuel‚ can contribute to the demand for heat‚ electricity and synthesis gas (syngas). Nevertheless‚ there are inefficiencies in
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BRIGGS RAUSCHER OSCILLATING CLOCK COURSEWORK Aim: To investigate the effect of temperature on the rate of reaction. To investigate the order of reaction with respect to hydrogen peroxide and ethanoic acid (acetic acid) by the use of an oscillating clock reaction. To determine the activation enthalpy with and without catalytic ions and use this to compare the effectiveness. To investigate the rate equation‚ rate constant and possible mechanism for this reaction. Background research: The Briggs-Rauscher
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Introduction: Thermochemistry is the branch of chemistry that studies the energy and heat associated with chemical reactions and/or physical transformations. A reaction may release or absorb energy‚ and a phase may change‚ such as in melting and boiling. Thermochemistry focuses on these energy changes‚ particularly on the system ’s energy exchange with its surroundings. In combination with entropy determinations‚ it is used to predict whether a reaction is spontaneous or non-spontaneous‚ favourable
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