Examples of latent heat
[DOC File]Latent heats - Atmospheric Sciences
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Latent heat of fusion and vaporization. Latent heat is the energy change associated with the phase change of a material between gas, liquid and solid. The latent heat is written as L and given in J/kg in mks units. It literally means how much heat energy must be added to a mass of material to convert its phase such as from solid to liquid (melt ...
[DOC File]IDENTIFICATION OF A POLYMER
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The melting range of a thermoplastic can be determined after melting a few chips of the plastic in a test tube. A thermometer or thermocouple lead immersed in the melt can be used to measure the temperature at which solidification occurs. During freezing, the rate of cooling levels out as the latent heat …
[DOCX File]Majors & Minors at Bucknell | More Than 60 Majors & 70 …
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The slope of the latent heat portion of the heating curve is _____; that is, it is _____ from the saturated-liquid state to the saturated-vapor state. Based on the Gibbs phase rule, the temperature must remain _____ for a given pressure while a pure chemical compound is vaporizing or condensing.
[DOC File]Latent heats
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Latent heat of fusion and vaporization. Latent heat is the energy change associated with the phase change of a material between gas, liquid and solid. The latent heat is written as L and given in J/kg in mks units. It literally means how much heat energy must be added to a mass of material to convert its phase such as from solid to liquid (melt ...
[DOC File]TAP608-0: Latent heat
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Worked examples: Latent and specific heat. Scalds from water and steam. We assume that our hand is at 37 ° C, and that we put 10 g of water at 100 ° C accidentally on our hand. The water will cool to 37 ° C. Assuming that all the energy lost by the water will be gained by …
[DOC File]Lessons
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Specific latent Heat. The specific latent heat, l . of a substance is the energy required to change the state of unit mass of the substance without change of temperature. ΔQ = m l. where: Δ. Q = heat energy required in. joules. m = mass of substance in . kilograms. l = specific latent heat in . J kg -1. Examples of SLH. Substance State change ...
[DOC File]ROLE OF WATER IN FOODS
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Heat of fusion-C. Gases . 1. Latent heat of vaporization. 2. Property of gases with heating-II. Functions of Water and Liquids in Foods. A. Flow, type of bonding. B. Surface tension (interfacial tension) C. Evaporations. D. Vapor Pressure III. Water as a Dispersing Medium/Solvent. A. Dissolved molecules- B. Solubility. C. Concentration
[DOC File]Latent heat and change of state - schoolphysics
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The specific latent heat fusion is the heat energy needed to change 1 kg of the material in its solid state at its melting point to 1 kg of the material in its liquid state, and that released when 1 kg of the liquid changes to 1 kg of solid. The specific latent heat is the energy required to change the state of 1 kg of the substance. Gas. Liquid
[DOC File]Chapter 1, Review Questions
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4. Explain how heat transfer follows the second law of thermodynamics. 5. Distinguish between sensible heating and latent heating of the atmosphere. Which is more important on a global annual average basis? 6. During which phase changes of water is latent heat released to the environment? 7.
[DOC File]HEAT Practice Problems
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HEAT Practice Problems . Q = m x ∆T x C . 5.0 g of copper was heated from 20°C to 80°C. How much energy was used to heat Cu? (Specific heat capacity of Cu is 0.092 cal/g °C) How much heat is absorbed by 20g granite boulder as energy from the sun causes its temperature to change from 10°C to 29°C? (Specific heat capacity of granite is 0.1 ...
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