Peter Jeschofnig‚ Ph.D. Version 42-0143-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable
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capillary rise method. 2. To study the effect of temperature on surface tension of liquids. 3. To study the factors affecting the rate of loss of heat of a liquid. 4. To study the breaking stress of different materials of varying diameter. 5. To study the Inter conversion of potential and kinetic energy. 6. To determine the specific heat capacity of liquids. 7. To study the factors affecting the range and height of a projectile. 8. To study the factors affecting the coefficient of friction
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recorded; the change in temperature (∆T) was calculated by subtracting the initial temperature from the final temperature. The reaction was performed twice for every calorimeter. The heat capacity (Ccal) of each calorimeter was calculated using the formula‚ C_cal=(-〖∆H〗_rxn^o n_LR)/∆T [1] where ∆Horxn is the total heat absorbed or evolved for every mole of reaction and nLR is the number of moles of the limiting reactant. The ∆Horxn used was -55.8kJ per mole of water while the nLR was 0.005 mole
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The first table and figure shows the result for the first experiment involving the measurement of lung volumes and capacities. Results from this particular experiment may deviate from the predicted values obtained using the Goldman and Becklake equations for Pulmonary function if the individual tested has a habit of smoking which could lead to a drop in functional residual capacity. The natural recoil of the lung is also evident in figure 1. During natural inspiration‚ the volume of air increases
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Submitted: 10/2/12 Date Performed: 10/2/12 Lab Section: Chem-180 Course Instructor: Bassa Purpose The purpose of the experiment was to take foods and to find out the energy content of the foods that we are experimenting with. By hands on burning or the food and taking the date that we find and putting it into equations to find what is needed. Procedure After organizing all the equipment necessary to perform the lab correctly and safety‚ I placed
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PSC 41- Specific Heat Capacity and Latent Heat Constants: Specific heat capacity ofwater=4180 J Kg-1 K-1 Specific heat capacity of ice=2050 J Kg-1 K-1 Specific heat capacity of copper= 386 J Kg-1 K-1 Specific heat capacity of aluminum=900 J Kg-1 K-1 Latent heat of vaporization of water =2.26x106 J Kg-1 Latent heat of fusion of water = 3.34x105 J Kg-1 Density of water =1000 Kg m-3 Conversion : 1L ≡ 103 g for water 1) A 12.5 g sample of an unknown metal‚ heated to 99.0
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The heat equation Specific heat capacity: The specific heat capacity of a substance is the heat required to produce a rise in 1 Kg Specific heat capacity of water ( ) ( ) ( ) Thermal capacity: It’s the quantity of heat needed to raise the temperature of the whole body by . Specific latent heat of fusion: The specific latent heat of fusion of a substance is the quantity of heat needed to change unit mass from solid to liquid without temperature change. Specific latent heat of fusion
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The specific latent heat of vaporization of a substance is the quantity of energy required to A. raise the temperature of a unit mass of a substance by one degree Celsius. B. convert a unit mass of liquid to vapour at constant temperature and pressure. C. convert a unit mass of solid to vapour at constant temperature and pressure. D. convert a unit mass of liquid to vapour at a temperature of 100°C and a pressure of one atmosphere.
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Latent heat is a science term used to describe the amount of energy that has been absorbed or released when a substance goes through the process of changing states. | Latent Heat of Fusion - heat absorbed by a unit mass of a solid at its melting point in order to convert the solid into a liquid at the same temperature The heat absorbed as a substance changes phase from liquid to solid‚ a process called fusion or solidification. For water‚ Latent Heat of Solidification - heat liberated
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water. To determine the heating value of biodiesel‚ a bomb calorimeter will be utilized to measure the heat produced. The first concept that this method utilizes is an overall energy balance for the fuel and water system. (1) Where is the change in energy of a system‚ [J] is the energy of the fuel‚ [J] is the energy of the water‚ [J] is the heat of the fuel in the system‚ [J] is the heat of the water in the‚ [J] is the change in work of the system‚ [J] is the energy from the transfer
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