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How much energy is required to boil dry 1.5 kg of water initially at 100℃, which has a specific latent heat of vaporisation value of 2,260,000 J/kg? How much energy is required to melt 15g of gold, when initially at its melting point, with a specific latent heat of fusion value of 62,800 J/kg? Answers: Putting the specific latent heat to use
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That is, if the latent heat value of the water melt is 333.55 kJ / Kg, then the latent heat value of solidification or freezing of the water will be -333.55 kJ / Kg. Latent heat of condensation . The latent heat of condensation is that which occurs when there is a phase change from a gaseous substance to a liquid, as in the case of water vapor.
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Heat lost by water is equal to the mass times the specific latent heat of fusion and the equation is VtI=ML, M is mass of water in difference, t stands for the time taken for heat the ice and L is the latent heat of fusion of ice. ThereforeL ==∵=2700J ∴L=2.7×105Jkg-1 and it is not very similar to the exact value of the latent heat of fusion of ice, which is 3.3×105 Jkg-1. Next part is ...
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specific latent heat of fusion = 334 kJ/kg (from the table above) specific latent heat of fusion = 334 × 1,000 = 334,000 J/kg. thermal energy = 0.5 × 334,000 = 1,670,000 J (167 kJ) Measuring ...
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Physicists recognize three types of latent heat, corresponding to the changes of phase between solid, liquid, and gas: The latent heat of fusion, L f. This is the heat per kilogram needed to make the change between the solid and liquid phases, as when water turns to ice or ice turns to water.
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Hmm..I am explaining in a very easy way. The latent term is used whenever there is a phase change process. Whether, a substance is converting from solid to liquid or liquid to gas, we use this term latent heat. So lets come to latent heat of vapor...
Chat OnlineFor example, when a pot of water is kept boiling, the temperature remains at 100 °C (212 °F) until the last drop evaporates, because all the heat being added to the liquid is absorbed as latent heat of vaporization and carried away by the escaping vapour molecules.Similarly, while ice melts, it remains at 0 °C (32 °F), and the liquid water that is formed with the latent heat of fusion is ...
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Latent heat (also known as latent energy, or as Heat of Transformation) is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process — usually a first-order phase transition.. Latent heat can be understood as energy in hidden form which is supplied or extracted to change the state of a substance without changing its temperature.
Chat OnlineSimilarly, while ice melts, it remains at 0 °C (32 °F), and the liquid water that is formed with the latent heat of fusion is also at 0 °C. The heat of fusion for water at 0 °C is approximately 334 joules (79.7 calories) per gram, and the heat of vaporization at 100 °C is about 2,230 joules (533 calories) per gram.
Chat OnlineBased on our experiment the latent heat of vaporization of water is 2478630 L/kg, which is close to the table value; 2300000 J/kg. By this we can calculate that our result is 7. 3% higher than the expected table value number. Evaluation: There’s a linear line seen on the graph, where you can determine the L of water.
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Water has a high latent heat of combination, so transforming water into ice requires expulsion of more vitality than solidifying fluid oxygen into strong oxygen, per unit gram. Specific Latent Heat Specific latent heat is characterized as the measure of warm vitality (heat, Q) that is consumed or discharged when a body experiences a steady temperature process.
Chat Online61 Zeilen· Latent heat is the heat absorbed or released as the result of a phase change. This …
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Under 'latent heat' in one encyclopedia, it gives the latent heat of fusion for water as 334 kJ/kg. This is the quantum of heat needed to get a change of phase (solid to liquid) with no change of ...
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The (latent) heat of vaporization (∆H vap) also known as the enthalpy of vaporization or evaporation, is the amount of energy (enthalpy) that must be added to a liquid substance, to transform a given quantity of the substance into a gas.. The enthalpy of vaporization is a function of the pressure at which that transformation takes place. The heat of vaporization diminishes with increasing ...
Chat OnlineThat is, if the latent heat value of the water melt is 333.55 kJ / Kg, then the latent heat value of solidification or freezing of the water will be -333.55 kJ / Kg. Latent heat of condensation . The latent heat of condensation is that which occurs when there is a phase change from a gaseous substance to a liquid, as in the case of water vapor.
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