WEB(c) Coal was formed by the decomposition of large plants and trees buried under the earth millions of years ago. It is believed that millions of years ago, due to earthquakes and volcanoes, etc., the forests were buried under the surface of the earth and got covered with sand, clay, and water.
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WEBOur expert help has broken down your problem into an easytolearn solution you can count on. Question: 2) :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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WEBJun 14, 2021 · Also, once the curd is formed, it cannot be reversed back into milk. So, there is a formation of new substance with different properties and also it is an irreversible process. Hence, setting of curd is a chemical change. Question 7. Explain why burning of wood and cutting it into small pieces are considered as two different types of changes ...
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WEBNov 19, 2020 · For an irreversible adiabatic process entropy is generated within the system resulting in an increase in the entropy of the system only. An example of an irreversible adiabatic process is the rapid expansion or compression of a gas by a piston in an insulated cylinder such that the gas is not in internal equilibrium during the process.
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WEBSubstituting this into the equation for Qc/Qh, Q c / Q h, we obtain. Qc Qh = Tc Th. Q c Q h = T c T h. Finally, with Equation, we find that the efficiency of this ideal gas Carnot engine is given by. e = 1 − Tc Th. e = 1 − T c T h. An engine does not necessarily have to follow a Carnot engine cycle.
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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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WEBAug 24, 2019 · The irreversible adiabatic process is carried out similar to irreversible isothermal process by halving the pressure and allowing the gas to expand at constant external pressure. When the process reaches the same volume as the reversible process, state 2, the gas is not yet in equilibrium as its internal pressure is still greater than the ...
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WEBJul 8, 2017 · In this Physics video lecture in HINDI we explained how entropy changes in irreversible processes in compared to a reversible process. Entropy decreases in i...
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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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WEBThe point of death of the different cells and organs is not as important as the certainty that the process has become irreversible." The statement had a profound effect on modern medical thinking. "Irreversible loss of function of the organism as a whole" became an accepted clinical criterion of death.
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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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WEBJul 6, 2020 · The reason why more work is done in a reversible process than an irreversible process is in an irreversible process entropy is generated within the gas whereas in a reversible process entropy is not generated. That additional entropy has to be transferred to the surroundings in the form of heat, leaving less heat available to be .
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WEBEither of Equation ( ) or ( ) can be interpreted to mean that the entropy of the system,, is affected by two factors: the flow of heat and the appearance of additional entropy, denoted by, due to irreversibility This additional entropy is zero when the process is reversible and always positive when the process is irreversible.
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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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WEBSolutions for Chapter 6 Problem 13CQ: Explain the difference between a reversible and an irreversible process. List three or more examples of irreversible processes. ... On other hand for an irreversible process, the initial state of system and surroundings cannot be achieved. Whatever one may try, there will be always some alterations to ...
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WEBJul 3, 2023 · It is used as fuel. It is a better fuel than coal because it produces more heat on burning than an equal amount of burns without producing any smoke whereas coal produces a lot of smoke on burning. Question 8 Explain the process of formation of petroleum. Answer It was formed by the decomposition of the remains of tiny plants and ...
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WEBMar 10, 2019 · A reversible process is a process in which both system and surrounding can be restored to original state after the conclusion of the process, by any means. Now it is obvious that a process which is not reversible is an irreversible process. Practically all the processes are irreversible processes. Causes of irreversibility in a process. Lack .
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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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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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WEBMar 11, 2023 · Reversible process: − a reversible process is a process whose direction can be 'reversed' by including infinitesimal changes to some property of the system via its surroundings. Irreversible process:− In a science a process that is not reversible is called irreversible. this concept arises frequently in thermodynamics.
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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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WEBApr 2, 2023 · For an adiabatic process, q=0 by definition, and therefore the difference in the heat evolved in two adiabatic processes is and will always be, Δq = 0, irrespective of whether these are reversible or irreversible. Second, the second law of thermodynamics relates the heat exchanged in a process to the entropy change, with a reversible .
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WEBAug 14, 2020 · Recognizing that the work done in a reversible process at constant pressure is w rev = −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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WEBOct 19, 2023 · Coal is a black or brownishblack sedimentary rock that can be burned for fuel and used to generate electricity. It is composed mostly of carbon and hydrocarbons, which contain energy that can be released through combustion (burning). Coal is the largest source of energy for generating electricity in the world, and the most abundant fossil fuel ...
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WEBexplain me the difference of reversible change and irreversible change. View Solution. Q 3. Is cutting or tearing of paper reversible or irreversible. if reversible how can we reverse it? Name the process and explain it. View Solution. Q 4. 'One way changes are classified is reversible and irreversible'.
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WEBReversible process: Irreversible process: i. A reversible process is a change that can be retraced in a reverse (opposite) direction. An irreversible process is a change that cannot be retraced in a reverse (opposite) direction. ii. The path of a reversible process is the same in the forward and the reverse direction.
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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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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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WEBOct 19, 2023 · Matter is capable of undergoing changes, which are classified as either physical or chemical. Physical changes in matter are often reversible: An ice cube can melt into liquid water, and then the liquid water can be frozen back into an ice cube. Chemical changes, on the other hand, are not reversible: A log burned in a fire turns to ashes, but ...
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WEBStep 1. In thermodynamics, a process that cannot be precisely undone to return the system to its initial con... View the full answer Step 2. Unlock. Answer. Unlock.
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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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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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WEBMay 22, 2019 · A throttling process is a thermodynamic process, in which the enthalpy of the gas or medium remains constant (h = const). In fact, the throttling process is one of isenthalpic processes. During the throttling process no work is done by or on the system (dW = 0), and usually there is no heat tranfer ( adiabatic) from or into the system (dQ = 0).
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WEBAug 8, 2019 · Coalescence is a merge of two or more droplets into a single droplet, with the rupture of the surface film of each droplet, forming a new and larger droplet, independent of the other droplets. It is an irreversible process, different from flocculation and sedimentation, which also allow two or more droplets to merge into a single droplet.
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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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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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