WEB5 days ago · The process of making curd from milk is actually simple. It requires the following steps: * First, the milk is heated to boil for a few minutes. In this process, the extra water present in the milk gets evaporated and the milk gets thickened a bit. * Then, the milk is allowed to cool to the room temperature. * Then one spoon of curd is added to ...
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WEBJun 24, 2023 · The combustion of fossil fuels is an example of an irreversible process in nature, as it involves a chemical reaction that permanently changes the composition of the fuel and releases energy that cannot be fully recovered.. When fossil fuels, such as coal or oil, are burned, they undergo a chemical reaction with oxygen in the air, releasing .
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WEBwhere Q is the heat that transfers energy during a process, and T is the absolute temperature at which the process takes place.. Q is positive for energy transferred into the system by heat and negative for energy transferred out of the system by heat. In SI, entropy is expressed in units of joules per kelvin (J/K). If temperature changes during .
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Reversibility and Irreversibility. Reversibility and irreversibility are central concepts of classical thermodynamics. Rigorously speaking, in physics and chemistry all processes are reversible. However, for many chemical processes the probability of the reverse process is negligible. For instance, processes such as the combustion of coal ...
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WEBSection Summary. Entropy is the loss of energy available to do work. Another form of the second law of thermodynamics states that the total entropy of a system either increases or remains constant; it never decreases. Entropy is zero in a reversible process; it increases in an irreversible process.
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WEBDestructive Distillation is a chemical process used to decompose unprocessed materials. It is done by heating the unprocessed material leading to a relatively large amount of 'cracks'. It is the treatment of certain organic substances with a fixed amount of oxygen. It is useful in producing a variety of products, including ethanol, methanol ...
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WEBIs it possible for the entropy change of a closed system to be zero during an irreversible process? Explain. There are 2 steps to solve this one. To begin solving, understand that entropy is a measure of the disorder or randomness of a system and that a closed system neither allows the transfer of matter in or out of the system, but does allow ...
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WEBJan 25, 2023 · ii. The flower blooming is an irreversible change because flowers cannot turn back into buds. iii. When milk is not refrigerated, it spoils quickly, especially in the summer. This is known as curdling or sour milk, and it is an irreversible process. If we want to make cottage cheese or paneer, we can curdle milk by adding lemon juice. iv.
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WEBReversible process and consequently reversible cycle is an ideal one. There are no losses in the form of friction, temperature differences for heat transfer to take place. Presence of fraction makes the process mechanically irreversible and the temperature difference for heat transfer during the process makes the process thermally irreversible.
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WEBDec 3, 2022 · My teacher said that the magnitude of the work done in the reversible process will be more than that done in the irreversible process. The reason behind this, my teacher said, was that the final temperature of irreversible process will always be higher than that of reversible process. But we were not taught why this happens.
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WEBExplain your choice. h) The compound " A B" is a gas and the element " C" is a solid. What effect would grinding " C" into a fine powder have on the graph shown here? 4. Burning coal (Carbon) is a highly exothermic reaction. However coal, in contact with air at room temperature has such a slow reaction that it is not noticeable.
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WEBEngineering; Mechanical Engineering; Mechanical Engineering questions and answers; 2. (a) Explain the difference between a reversible and irreversible process in terms of the order of the system before and after the process and give an example of a naturally occurring irreversible event to illustrate your explanation.
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WEBAug 10, 2020 · The coal rank influences how the nitrogen functionality can be modified after the combustion process. The pyrrolicN in anthracite coal might be considered to be the major functional form that directly affects the conversion of nitrogen to NO while both pyrrolicN and pyridinicN in semianthracite were mostly converted into quaternaryN of ...
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WEBYour solution's ready to go! Our expert help has broken down your problem into an easytolearn solution you can count on. Question: An ideal gas in thermal contact with the surroundings is cooled in an irreversible process at constant pressure. Are delta S, delta S surroundings, and delta S total, positive, negative, or zero?
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WEBStep 1. Reversible Process : The system and surroundings can be restored to their initial states ⋅. No energy is dissipated or ... View the full answer Step 2. Unlock. Answer. Unlock. Previous question Next question.
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WEBApr 22, 2024 · In a standard floatsink analysis, set amounts of the representative coal sample are crushed to a specified particle size and placed in liquids of known density or across a range of densities. Coal has relatively low density or specific gravity ( to ) compared to other rocks such as shale ( to ) or minerals such as pyrite ( to ).
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WEBFeb 24, 2012 · The Rankine Cycle is a mechanical cycle commonly used in power plants to convert the pressure energy of steam into mechanical energy through steam turbines. The Rankine Cycle's major components include a rotating steam turbine, a boiler pump, a stationary condenser, and a boiler. A boiler is used to heat the water for steam at the .
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WEBMar 18, 2016 · If we follow this game plan for the irreversible process, even if the final pressure matches the value be obtain in the reversible process, the final temperatures and the final volumes will not match. If you would like me to provide a detailed analysis of the irreversible case, illustrating in detail what transpires, I will be glad to do so.
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Communiion Basics. Communiion is an everpresent phenomenon. It is such a dynamic and enduring process that often we are not even aware of when it starts or ends. We continue to develop our communiion ability and knowledge throughout our lives. This book strives to assist in this development by providing the knowledge, theory, and ...
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WEBOct 2, 2012 · 2 Answers. There are two parts to this answer. The first is that the entropy change is defined only for reversible processes. The second is that the entropy is a state function. Many, but not all, the functions in thermodynamics (including the internal energy) are state functions. A state function is one that is independent of path.
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WEBThe changes in kinetic and potential energies are negligible. Determine: (a) the magnitude and direction of the power during the process; (b) the rate of entropy generation associated with the process; (c) if the process is reversible, irreversible, or impossible. Explain. Answers: (a) MW; (b) kW/K;
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WEBExplain the difference between a reversible and irreversible process. (With the aid of a diagram) 2. moles of an ideal gas expands isothermally and reversibly from 10 to 20 L, at 298 K. (a) What is the change in entropy for the gas, ΔSs s ?
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WEBJan 13, 2022 · As a result, a reversible process can change direction at any time, whereas an irreversible process cannot. When a gas expands reversibly against an external pressure such as a piston, for example, the expansion can be reversed at any time by reversing the motion of the piston; once the gas is compressed, it can be allowed to .
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WEB1 / 4. Find stepbystep Physics solutions and your answer to the following textbook question: Give two examples of reversible processes and two examples of irreversible processes in purely mechanical systems, such as blocks sliding on planes, springs, pulleys, and strings. Explain what makes each process reversible or irreversible..
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WEBJan 6, 2020 · Environmental Impact Assessment (EIA) is a process of evaluating the likely environmental impacts of a proposed project or development, taking into account interrelated socioeconomic, cultural and humanhealth impacts, both beneficial and adverse. UNEP defines Environmental Impact Assessment (EIA) as a tool used to .
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WEBThe unit of Gº is J. Use the intercept rule we learned in class to derive the expressions of the chemical potentials of Cu and Zn in the liquid alloy at 1400K in terms of Xcu (or XZn), GC and G2 . When mixing pure liquid Cu and Zn at 1400K, is the process reversible or irreversible? Please explain.
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WEB3,508 solutions. 10th Edition • ISBN: (5 more) Erwin Kreyszig. 4,134 solutions. 1 / 4. Find stepbystep Engineering solutions and your answer to the following textbook question: Is it possible for the entropy change of a closed system to be zero during an irreversible process? Explain..
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WEBWhen examining thermodynamic processes some simplifying assumptions may be applied to help describe and analyse a given system. These simplifiions can be viewed as 'ideal' thermodynamic processes and include adiabatic, isenthalpic, isentropic, isobaric, isochoric, isothermal, isentropic, polytropic and reversible processes. This article provides a brief .
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WEBIrreversible Process: The process is said to be an irreversible process if it cannot return the system and the surroundings to their original conditions when the process is reversed. The irreversible process is not at equilibrium throughout the process. For example, when we are driving the car uphill, it consumes a lot of fuel and this fuel is ...
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WEBAug 13, 2021 · Recognizing that the work done in a reversible process at constant pressure is. wrev = − PΔV, we can express Equation as follows: ΔU = qrev + wrev = TΔS − PΔV. Thus the change in the internal energy of the system is related to the change in entropy, the absolute temperature, and the PV work done.
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WEBAug 29, 2023 · Chemical Reversibility. As we have defined them here, electron transfer is a heterogenous process occurring between a solid working electrode and a solution species close to or at the surface of the electrode. To determine the extent of chemical reversibility, we must ask ourselves if the electrochemically generated species is stable to ...
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WEBThe Rankine cycle is a kind of ideal cycle that described the process by which the heat engines or steam engines allow work to be extracted from the fluid such as steam in steam power plants. The heat sources from which the power plant uses the Rankine cycle are coal, natural gas, or oil.
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WEBMechanical Engineering. Mechanical Engineering questions and answers. 8. To determine the entropy change for an irreversible process between states 1 and 2, should the integral be performed along the actual process path or an imaginary reversible path? Explain. Is it possible to create entrony2 Is it possible to destroy it2.
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WEBIn the process of CBM exploitation, water in the coal seam is gradually discharged with the drainage and depressurization, and free methane in the porefracture system flows toward the fracture and wellbore under the effect of pressure difference, which forms a concentration difference in the coal matrix; thus the adsorbed methane is gradually .
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WEBAn irreversible process takes place by which the entropy of the universe increases by J/K. If the temperature of the environment in which the process occurred is 220 K, how much energy (in J) was made unavailable for useful work as a result? Problem 53P: A copper rod of crosssectional area cm2 and length m conducts heat from a ...
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