Waris Butt PHY 112 Mr. Fasciano Class #18336 06/08/14 Purpose: Heat flow will occur between objects in contact until no more heat flow is detectable. Using calorimetry to analyze heat flow quantitatively and the equation: Q = mc ΔT‚ to determine the specific heat capacity of an object and heat flow from or to an object; respectively. Materials: Circle K 44 oz Styrofoam cup with lid Large Plastic Harkins Theater cup Thermometer
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6. Applications * Is it possible to add heat to a body without changing its temperature? Yes. It is possible to add energy to a body (in the form of heat) and not raise its temperature by causing a phase change. When you heat ice it takes energy to convert it from ice to water‚ but does not change the temperature of the body until it is all converted. The principle behind this is what we call latent heat. It refers to the energy (or heat) required to change the state of a substance without changing
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the heat transfer occur: from hot water to cold‚ or from cold water to hot? Answer: The heat transferred from hot water to cold water is due to their potential (temperature) difference. * c. What quantity of heat was transferred from one sample to the other? Answer: Here heat transfer from hot water to cold water. Mass of hot water (m) = 200g Initial temperature (T) = 80˚C Finial temperature (T2) = 60˚C Specific heat of water (s) = 4.18 J/g˚C ∆T=(60-80)℃ = - 20˚C Heat transfer
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equation qwater = m × c × ΔT. We can assume that the specific heat capacity of water is 4.18 J / (g × °C) and the density of water is 1.00 g/mL. The water has absorbed the heat of the metal. So‚ qwater = qmetal m=mass of water= density x volume = 1 x 26 = 26 grams ΔT = T(mix) – T(water) = 38.9 – 25.3 = 13.6 q(water) =26 x 13.6 x 4.18 q(water) = 1478 Joules 2. Using the formula qmetal = m × c × ΔT‚ calculate the specific heat of the metal. Use the data from your experiment for the
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Heat Capacity and Coastal Climates: Which Absorbs and Loses Heat Faster––Land or Water? PURPOSE The purpose of this lesson is to investigate the heat capacity of water and land and to explain how the properties of water influence coastal climates. EXPERIMENTAL DESIGN In this experiment‚ you will heat the same volume of water and sand or soil in two different containers. They will compare the temperatures of the water and the sand or soil as each beaker is heated and as each beaker cools to
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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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plants. The uptake of water by plant cells creates a pressure against the rigid ce ll wall. This turgor pressure helps non-woody plants to remain upright. Water has a high specific tension and water molecules have cohesive forces holding them together‚ due to hydrogen bonding between water molecules. This allows water to be pulled through xylem in plants. It is also a transport medium‚ just like in animals‚ substances‚ such
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Date: 25th November‚ 2011 Aim: To show that when Hot and Cold water are mixed‚ heat lost by hot water is equal to heat gained by cold water. Theory: This Lab is done to demonstrate “the Law of Conservation of Energy”‚ which implies: - “the heat lost by one (1) substance must be equal to the heat gained by another substance within the system”. Apparatus: Two (2) similar Calorimeters: a Thermometer: a Measuring Cylinder: a Bunsen burner: a Tripod: an Asbestos Gauze Cork Mat. Procedure:
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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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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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