A closed, rigid tank fitted with a paddle wheel contains 0.1 kg of Carbon Monoxide (CO), initially at 300K and 0.5 MPa. The paddle wheel stirs the CO for 20 minutes, with the power input varying with time according to W = -a · t where: a= 15 Watts/min andt is time in minutes. The final temperature of the CO is 1100 K. Assuming no changes in potential and kinetic energies, determine:

Q: 3. Verify the validity of the last Maxwell relation (Eq. (2)) for refrigerant-134a at 80°C and 1.2…

A: Explanation: The stepwise procedure to solve this problem is shown in the following attached image:

Q: A certain material has the Helmoltz free energy given as: 3 (V F(T,V, n) = -nRT Ln |CT³G-b)]- nRT +…

A: Given, material has the Helmholtz free energy equation as, Now, calculate the entropy,

Q: A piston-cylinder device initially contains 0.4 m^3 of saturated water vapor at a pressure of 200…

A: vapor pressure = 200kPa loss pf heat = 10kJ PRESSURE RISES TO = 300KPA

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Q: 3. One kilogram of Argon gas contained in a piston-cylinder assembly is initially an 100 kPa and 450…

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Q: Calculate the boundary work done by the system during this process

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Q: A 0.4m^3 tank contains oxygen initially at 120-bar and 30C. A paddlewheel within the tank is rotated…

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Q: An insulated piston-cylinder device contains 0.2 m³ of saturated refrigerant R-134a vapor at 1 MPa…

A: The piston cylinder is insulated.The volume of saturated refrigerant vapor is .The initial pressure…

Q: Determine the work obtained to expand a gas of 0.34 m^3 to a final volume of 1.6 m^3 with a constant…

A: Given: Initial volume (V1) = 0.34 m^3  final volume (V2) = 1.6 m^3  constant external pressure (P) =…

Q: . Water vapor is placed in a container with a constant volume of 1.2m^ 3 at 5Mpa and 300℃. When the…

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Q: A gas contained in a vertical cylindrical tank has a volume of [10 + (K/100)] m3 . The gas receives…

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Q: for a real substance how P (pressure) changes with changes in V (volume) and T (temperature) in…

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Q: he volume and pressure of a gas are 7.00 m and 2.1 atm respectively. (a) If this gas expands to four…

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Q: A mechanical engineer has approached your boss with a design for a new device. The device is fed…

A:

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.