In a system, 2.5 kg of air at 350 0C expands isothermally behind a piston in a cylinder until the volume has doubled. The air is then compressed at constant pressure until the original volume has been reached. Take the specific heat at constant pressure and volume as 1.006 and 1.717 kJ/kg K, respectively. calculate the isothermal change of entropy and calculate the isobaric change of entropy and the value of change of entropy to 2 decimal place.

Q: team with an enthalpy of 2843.5 KJ/kg undergoes a constant pressure process at 0.9 MPa until the…

A: Given:h1=2843.5 KJ/KgP1=P2=0.9 MPah2=2056.1 KJ/Kg NOTE: According to Bartleyby's guidelines we can…

Q: A 6.25 kg block of ice is placed on a concrete floor which has a constant temperature of 25.5⁰C. The…

A: Given data T=25.5°CQ=2.09×106 J

Q: Air is compressed from 95 kPa and 17°C to 722 kPa and 373°C. Assuming constant specific heats,…

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Q: Consider 9 kg/s of saturated liquid at 30 atm. Calculate its entropy in kW/k

A: Given: The mass flow rate, m = 9 kg/s The pressure, P = 30 atm

Q: A piston-cylinder assembly contains 3 lb of water vapor, initially at 300F and 20 lbf/in2 is…

A: To find (a) The total work done during the process W. (b) The total change in entropy during the…

Q: A gas compressed isothermally from the initial pressure and temperature of 120 kN/m? and 30 °C…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A piston-cylinder device is divided into two compartments, A and B, containing steam at pressure P =…

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Q: Air is reversibly compressed from an initial state of 100 kPa and 17 °C to a final state of 600 kPa…

A: Given:- Initial temperature:- 17 °C Initial pressure:- 100 kPa Final temperature:-57 °C Final…

Q: A 20 kg aluminum block initially at 500 C is brought into contact with a 20 kg block of iron at 100…

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Q: Refrigerant-134a enters a compressor as a saturated vapor at 160 kPa at a rate of 0.03 m3/s and…

A: (a) The surrounding temperature is given as, The rate of change in entropy of the surrounding is…

Q: Fifteen (15) kg of liquid water at 10 MPa at 50°C. A) If the water is heated to 75°C, what is the…

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Q: Saturated steam at 0.16 MPa is compressed in irreversible adiabatic process with an efficiency of…

A: Given   Initial pressure, P1 = 0.16 MPa     Final pressure, P2 = 0.45 MPa Find   Final entropy, s2

Q: A 50-kg copper block initially at 80°C is dropped into an insulated tank that contains 0.120 m3 of…

A: Given data: The mass of the copper is mC=50 kg The initial temperature of copper is TCi=80°C=353 K…

Q: Water is contained in a closed rigid tank at an initial pressure of 1200 kPa. Heat transfer occurs…

A: Given data: -  The initial pressure is P1 = 1200 kPa. The final pressure is P2 = 7 MPa. The mass of…

Q: Consider a quasistatic isothermal expansion of an ideal gas from Va ---> Vb at temperature Th. If…

A: Given: To determine the change in entropy of the gas for isothermal expansion process.

Q: Air is compressed from an initial state of 100 kPa and 17°C to a final state of 600 kPa and 57°C.…

A: Given: The initial pressure of the air before compression is P1 = 100 kPa. The final pressure of the…

Q: A 30-kw compressor compresses air from P to P2. As a result of heat transfer to the surrounding…

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Q: Q3/ 0.34 m' of a perfect gas at constant pressure of 2.8 bar is heated from 100°C to 300°C and it is…

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Q: Determine the change in entropy for an ideal gas that undergoes a change in conditions from a…

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Q: Determine change in specific entropy of the ideal gas from state 1 to state 2 in kJ/kg K

A: Given, State1:  T1=300 K      P1=100 kPAState 2:  T2=600 K      P2=500 kPAcp=1 kJ/kg-kR=cp-cvcv=0.7…

Q: Determine the change in specific entropy, in kJ/(kg.K), of carbon monoxide as an ideal gas…

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Q: 5 ft3 /s oT air is conmpressed in an adiabatic compressor from an initial state of 14.7 psi and 60…

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Q: 30-kg aluminum block (specific heat = 0.973 kJ/kg K) initially at 135°C is brought into contact with…

A: Given data :- Mass of Al block =30 kg Mass of iron block = 35 kg Specific heat of aluminum = 0.973…

Q: Air at an initial state of 100 kpa and 17 degree Celsius is compressed to a final state of 600 kpa…

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Q: The entropy of a hot baked potato decreases as it cools. Is this a violation of the increase of…

A: The cooling of a body is spontaneous process as we need not to work & it is a feasible process.…

Q: 2-kg of air (as an ideal gas) is compressed in an adiabatic compressor from an initial state of 100…

A: Given Data State 1: 100 kPa, 300 K State 2: 200 kPa, 600 K m=2 kg

Q: entropy : Air inside a cylinder has increased its pressure from 100 KPa to 200 KPa. Evaluate the…

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Q: Determine the change in entropy for an ideal gas that undergoes a change in conditions from a…

A: Given data: T1=300°CP1=1.2 barT2=500°CP2=6 bar Need to determine the change in entropy for an ideal…

Q: What will be change in entropy of the system if a piston-cylinder arrangement contains 0.06 m³ of…

A: Data given -  V1 = 0.06 m3  P1 = 1 bar  T1 = 295 K  Isothermally  P2 = 6 bar

Q: A rigid tank contains 5 kg of saturated vapor steam at 100°C. The steam is cooled to the ambient…

A:

Q: total change of entropy.

A: Find  total change of entropy.

Q: A piston-cylinder device is divided into two compartments, A and B, containing steam at pressure P =…

A: Compartment A and B contains steam at P= 500 kPa   Properties fetched from steam table   Mass…

Q: A piston-cylinder device is divided into two compartments, A and B, containing steam at pressure P =…

A: Given; Compartment A; P=500kPaT=500°C mA=0.54 Kg Compartment B; P=500kPax=0.7 mB=0.46 Kg

Q: Heat is transferred at a rate of 2 kW from a hot reservoir at 800 K to a cold reservoir at 300 K.…

A: Given Data Hot reservoir temperature TH=800K Cold reservoir temperature =TL=300K Q=2KW

Q: Prob.43. A system at 450 K receives 225 kJ/s of heat energy from a source of 1500 K and the…

A: Given data: The temperature of the system is T1 = 450 K. The heat received by the system is Q = 225…

Q: A 0.60 kg iron horseshoe is taken from a furnace at 930°C and dropped into 3.00 kg of water at…

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Q: A closed system contains 10 kg of saturated liquid ammonia at 10°C. Heat addition required to…

A: Given: The temperature of saturated liquid ammonia, T= 10o C The mass of the saturated liquid…

Q: A piston is inserted into a cylinder causing the pressure in the air to change from 50 to 4000 kPa…

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Q: A A body of constant heat capacity c, and initial temperature T is placed in contact with a heat…

A: Entropy change is positive when the heat is added to the system and it is negative when heat is…

Q: What is the total entropy change to expand water at 30 psia and 70 percent quality to 10 psia in a…

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Q: The entropy of the system can be determined by integration from

A: Entropy is the ratio of heat transfer divided by the absolute temperature

Q: For small temperature differences, the exact and approximate relations for entropy changes of ideal…

A: Yes, the statement is completely true that for a very small difference in temperature there is not…

Q: 20- Air enters a nozzle steadily at 280 kPa and 77°C with a velocity of 50 m/s and exits at 85 kPa…

A: Given:P1=280 kPaT1=77o C or 350 Kv1=50 m/sP2=85 kPav2=320 m/sQ=3.2 kJ/kg

Q: am at 110.356 kPa and 140.356oC is compressed isothermally until the quality of steam is 70%.…

A: Given:P1=110.356 kPaT1=140.356°Cx=0.70

Q: Steam at 110.546 kPa and 140.546oC is compressed isothermally until the quality of steam is 70%.…

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Q: A 30-kg iron block and a 40-kg copper block, both initially at 80°C, are dropped into a large lake…

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Q: Water (0.12m) COPPER A 50-kg copper block initially at 80°C is dropped into an insulated tank that…

A: Given: Mass of the copper block is 50 kg. Temperature of cu block is 80C. Volume of the water is…

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.