A piston–cylinder device initially contains 3 lbm of liquid water at 20 psia and 70°F. The water is now heated at constant pressure by the addition of 3450 Btu of heat. Determine the entropy change of the water during this process.

Q: Water vapor at 100 kPa and 150°C is compressed isothermally until half the vapor has condensed. How…

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Q: cylinder-piston assembly contains water at 120 C° and 100 kPa. The liquid is compressed in an…

A: ratio of specific heats of steam = 1.33 now , for adiabatic process P1-γ Tγ = constant1001-1.33 (…

Q: L Steam flows steadily into a turbine with a mass flow rate of 20 kg/s at 6 MPa and 600°C with a…

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Q: A well-sealed room contains 60 kg of air at 200 kPa and 25°C. Now solar energy enters the room at an…

A: GIVEN DATA - m=60kg T1=25'C =25+273=298K SOLAR HEAT =0.8KJ/S FAN POWER =120W TIME…

Q: A variable-load piston-cylinder device contains air (cp = 1.005 kJ/kgK; cv = 0.718 kJ/kgK) at 500…

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Q: Steam enters an adiabatic turbine at 8 MPa and 500°C at a rate of 3.1 kg/s and leaves at 10 kPa. If…

A: P1 = 8 MPaT1 = 500°C P2 = 10 kPa m = 3.1 kg/sW = 2.5 MW = 2.5 x 103 kWT2 =?

Q: Air is compressed steadily in a compressor from 100 kPa and 400 K to 1 MPa and 500 K, at a rate of…

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Q: A 0.3 m³ rigid tank contains refrigerant 134a at 650 kPa. Initially, 45% of the volume is occupied…

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Q: An insulated piston-cylinder device contains 0.02 m³ of steam at 300 kPa and 200°C. Steam is now…

A: The initial volume of the steam, (V1)=0.02 m3The initial pressure of the steam, (P1)=300 kPaThe…

Q: Beal eyeks A 0.8-m insulated rigid tank contains 2 kg of carbon dioxide at 90 kPa. Now paddle- wheel…

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Q: Consider a well-insulated piston cylinder device and it contains 3 L of saturated liquid refrigerant…

A: Data given in this problem :⇒Volume of liquid (V)= 3 litre = 3×10-3 m3 ⇒ Density of R 134-a =ρ=…

Q: A 0.5-m3 rigid tank contains refrigerant-134a initially at 250 kPa and 45 percent quality. Heat is…

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Q: A piston–cylinder device initially contains 15 ft3 of helium gas at 25 psia and 70°F. Helium is now…

A: Given data: Initial volume, V1 = 15 ft3 Initial pressure, P1 = 25 psia Initial temperature, T1 =…

Q: The inner and outer surfaces of a 4-m × 10-m brick wall of thickness 20 cm are maintained at…

A: Given: The inner surface temperature of the brick wall is T1 = 16 °C. The outer surface temperature…

Q: A 100-lbm block of a solid material whose specific heat is 0.5 Btu/lbm·R is at 80F. It is heated…

A: Given data: *The mass of the block is mb=100 lbm. *The specific heat capacity of block is cb=0.5…

Q: A piston-cylinder device contains 0.13 kg of air initially at 2 MPa and 350°C. The air is first…

A: Introduction In this problem, we will calculate the work done by the piston cylinder device or work…

Q: A 0.40-m3 insulated piston–cylinder device initially contains 1.3 kg of air at 30°C. At this state,…

A: Given: The initial volume of the air is V1=0.40 m3. The final volume of the air is…

Q: A piston-cylinder assembly initially contains 473 grams of refrigerant 134a at 400 kPa and 50°C. The…

A: Given:- Refrigerant R134a Initial Condition :  Mass(m) = 473 grams = 0.473 kg Pressure (P1) = 400…

Q: Seven kilograms of air is contained in a constant volume tank at 327 degrees C and 120 kPa, then is…

A: Calculate the entropy change of the air.

Q: 0.15 lbm of neon gas (in a piston cylinder device) at an initial pressure and temperature of 90 psia…

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Q: 900g of steam at 2000kPa fill a weighted piston-cylinder device whose volume is 0.071m3. The steam…

A: Given Data Mass of the steam is : m=900 g=0.9 kg Volume of device is :v=0.071 m3 Pressure of steam…

Q: steam initially at 200 kPa and 3000C. The steam is now cooled while being stirred until its volume…

A: First Step is To Write The Given Data. And We need To Take Some data from Steam table So Please…

Q: An insulated 40-ft3 rigid tank contains air at 50 psia and 120°F. A valve connected to the tank is…

A: The volume of the tank, (V)=40 ft3The initial pressure of the air, (P1)=50 psiaThe initial…

Q: A rigid tank is divided into two equal parts by a partition. One part of the tank contains 1.5 kg of…

A: Here we will refer to the steam table to get the values of specific volume and entropy at the…

Q: A rigid tank is divided into two equal parts by a partition. One part of the tank contains 2.5 kg of…

A: To find: The entropy change of water during the process. Given  The mass of compressed liquid m=2.5…

Q: A piston-cylinder device initially contains 0.4 m³ of air at 100 kPa and 80°C .The air is now…

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Q: Nitrogen gas is compressed from 80 kPa and 27°C to 480 kPa by a 10-kW compressor. Determine the mass…

A: The mass flow rate can be found from the compressor power and the work of compression as follows:

Q: heating system has a volume of 20 Land is filled with superheated water vapor at 200 kPa and 150°C.…

A: Volume of water = 20 LWater vapour pressure P1 = 200kPaWater vapour temperature T1 = 150o CSteam…

Q: (1)Refrigerant R-134a that has an initial volume of 860 L at 30°C with a quality of 70 percent is…

A: Given:V=890 L =890*10-3 m3T1=30°Cx1=0.7P2=900 KPaT2=80°C

Q: An adiabatic air compressor compresses 0.002 m³/s of air at 140 Kpa an 1.2 Mpa and 350 °C,…

A: Given data s per questionAn Adiabatic air compressorV1˙=0.002 m3/s, P1=140 kPa, T1=25°C=25+273=298…

Q: A piston-cylinder device initially contains steam at 3.5 MPa, and 250°C. Steam loses heat to the…

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

Q: A supply line that carries steam at 5MPa and 500°C is connected to a piston- cylinder device in…

A: Given, a piston- cylinder device with the following data.Initial Volume of steam, Initial pressure…

Q: Initially, a piston-cylinder device contains 6 kg of superheated steam at 110 kPa and 150°C. The…

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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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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.