A quantity of an ideal gas in an isolated system expanded isothermally and reversibly at 400 K from a volume V1 to a volume V2. During the expansion, the gas absorbs 200 J of heat from the reservoir in contact with it. If the gas expanded freely V1 to

Q: the change in the entropy by using average specific heat. the change in the exergy. the useful work.…

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Q: A large, insulated tank of contains 55 liters of water at a temperature of 20°C. You drop in an…

A: Given: Vtank=55 litersTwater=20°Cmice=30 gmTice=0°C

Q: An iron horseshoe of mass 1.47 kg is taken from a furnace at 660 ◦C and dropped into 1.83 kg of…

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Q: If a closed system is undergoing an irreversible process, the entropy of the system (a) must…

A: Given: Closed system,

Q: A system of 100 kg mass undergoes a process in which its specific entropy increases from 0.3 kJ/kg k…

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Q: hat is the expression of heat for an isothermal reversible expansion of a perfect gas from initial…

A: Reversible isothermal expansion: In this process temperature is constant and the pressure of the…

Q: Determine the change in the entropy of air,in kJ/kg-K, as it undergoes a change of state from 100…

A: Given : The initial pressure is .The initial temperature is .The final pressure is .The final…

Q: Two tank are connected, as shown in the figure below, both containing water. Tank A contains 0.5 kg…

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Q: A rigid tank contains an ideal gas at 40°C that is being stirred by a paddle wheel. The paddle wheel…

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Q: A piston-cylinder device contains 0.66 kg of nitrogen gas at 140 kPa and 37°C. The gas is now…

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Q: A 4-kg steel rod 873°C (specific heat= 0.85kJ/kg-K) is annealed in a cylindrical tank 3B0 kg of…

A: For steel rod, m1=4 kgT1=873oC=1146 Kc1=0.85 kJ/kg.K For water, m2=380 kgT2=20oC=293 Kc2=4.187…

Q: A process innovated by Engr. Santioque is considered to be in a constant pressure. If there is ten…

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Q: 4. Air flows into a well-insulated compressor with an initial state of P1 = 0.1 MPa and T1 = 27°C.…

A: Compressor is a device which is used to increase the pressure of a fluid by reducing the volume.…

Q: Determine (a) the entropy change of the refrigerant, (b) the entropy change of the cooled space

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Q: During a reversible process, 1.44 kg/s of gas rejects 316.3 kJ/s of heat isothermally at 24.2°C. For…

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Q: R-134a at 320 kPa and 40 C undergoes an isobaric process in a closed system until its quality is 45…

A: The change in internal energy, heat transfer, work done, and the entropy generated. Given: The…

Q: 10- A piston-cylinder device contains 5 kg of saturated water vapor at 3 MPa. Now heat is rejected…

A: Given:mass of the saturated vapor, m=5 kgPressure of saturated liquid, Pf=3 MPaPressure of saturated…

Q: Heat flows through a wall of a house at a steady-state on a day when the temperature of the outdoor…

A: From the given data,the question asked for total entropy generation. For that take inside and…

Q: Oxygen (molar mass 32 k g / k m o l ) expands reversibly in a cylinder behind a piston at a constant…

A: Given that ,  molar mass of Oxygen =32 kg/kmolConstant pressure = 3.06 bar Initial volume = 0.01…

Q: Oxygen (molar mass 32 k g / k m o l ) expands reversibly in a cylinder behind a piston at a constant…

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Q: A system of 100 kg mass undergoes a process in which its specific entropy increases from 0.3 kJ/kg k…

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Q: In a cylinder at 400 degrees Celsius and 2 kilograms of superheated water vapor in 600 kilopascals…

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Q: Consider a closed, isolated system that consists of two substances 1 and 2 that both have constant…

A: Given data: Cv1=1 J/KCv2=2 J/KT1,0=100 KT1,f=90 K Need to determine the minimum increase in the…

Q: Determine the change in the entropy of air, in kJ/kg-K, as it undergoes a change of state from 100…

A: The initial pressure is .The initial temperature is .The final pressure is .The final temperature is…

Q: Under what circumstances can the entropy of a system decrease for a spontaneous process?

A: Whenever there is some heat rejection from the system the entropy of the system decreases.

Q: 1 kg of air at 700 K and 1.1 MPa in a piston and cylinder devices undergoes a reversible and…

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Q: Oxygen (molar mass 32 k g / k m o l ) expands reversibly in a cylinder behind a piston at a constant…

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Q: A mass of 25 lbm of helium undergoes a process from an initial state of 50 ft3 /lbm and 60°F to a…

A: Given, mass of helium ( m ) = 25 lbm T1 = 60°F = 520°R T2 = 240°F = 700°R Specific volume (v1) = 50…

Q: An iron horseshoe of mass 1.47 kg is taken from a furnace at 660 ◦C and dropped into 1.83 kg of…

A: Given:  m1=miron=1.47 kgT1=660°Cm2=mwater=1.83 kgT2=8.5°Cc2=cw=4186 J/kg.Kc1=ciron=448 J/kg.K

Q: A piston-cylinder device contains 13 kg of refrigerant-134a at 750 kPa and 70 ∘C. The refrigerant is…

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Q: A heat source at 600 K loses 1000 kJ of heat to a sink at 300 K. The Entropy generated in this…

A: As per question we given determine the Entropy generated in this process would be equal

Q: Q3: (A) Determine the entropy change of system and surroundings for the problem shown in this…

A: Given:  Tsystem = 200 K Tsurrounding = 300 K Q = 70 KJ

Q: An ice cube (mass 30 g) at 0°C is left sitting on the kitchen table, where it gradually melts. The…

A: given:  mass of ice cube  m=30gT2=250CT1=00C

Q: It is required to compress steam isentropically from 250 kPa to 2.5 MPa, assuming that the steam…

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.