9. Helium is compressed in an adiabatic cylinder from 70°F, 10 ft³, 15 psia to 1 ft³ according to the relation PVK = c. Find the work nonflow, the final temperature and the change of enthalpy.

Q: three-step cyclic process. The gas is subj. uccessively to an isothermal expansion at 600 K to 3 bar…

A:

Q: A 400-L tank, A contains argon gas at 250 kPa, 30°C. Cylinder B, having a frictionless piston of…

A:

Q: One kilogram of water at 500 C and 1 kg of saturated water vapor, both at 200 kPa, are mixed in a…

A:

Q: Aj Wet steam at 200 deg C has a specific enthalpy of 2300 kJ/kg (in the 2 phase region). Determine…

A: According to the guidelines we are supposed to answer 1st question only.

Q: Steam at 7 bar, dryness fraction 0.96, is throttled-down to 3.5 bar. Solve for the change of entropy…

A: Given Data: The initial pressure of steam is, P1=7 bar. The initial dryness fraction is, x1=0.96.…

Q: Question 1. Refrigerant-I34a enters a compressor (as a saturated vapor) at 14°C. It leaves at 1600…

A:

Q: Find the quanity of heat required to produce 79% dry steam at 8000 kpa from feedwater at 50 degrees…

A: Given:x=0.79P=800 KPaT=50°C

Q: A cylinder/piston contains saturated vapour R-22 at 10°C; the volume is 10 L. The R-22 is compressed…

A:

Q: Calculate the change in entropy of air, if it is throttled from 5 bar, 27°C to 2 bar adiabatically

A: Data given-  P1 = 5 bar  T1 = 27°C = 300 K  P2 = 2 bar  Throttling process

Q: A room is divided by a barrier into two sections. One side of the room (state 1) has a volume of…

A: Given Data The initial pressure of the air is: P1=50 psi The initial volume is: V1=1000 ft3 The…

Q: An insulated piston- cylinder contains ammonia at 1000 kPa, 50°C. Ammonia is expanded in a…

A:

Q: Question attached

A: At P1=6MPa T1=500C   h1=3423.1 KJ/Kg     S1=6.8826 KJ/Kg-K At  P2s=10 KPa   Sf=0.6492 KJ/Kg-K…

Q: 12. Calculate the entropy of steam in kJ/kg-K at 476 kPa with quality of 0.6.

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Q: A flow of 2 kg/s completely dry air at T1, 100 kPa is cooled down to 10°C by spraying liquid water…

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Q: 6. Five pounds of a certain ideal gas with K 1.30 and R = 35 is compressed in polytropic process in…

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Q: 3. A piston-cylinder device contains 0.8 kg of steam at 300°C and 0.5 MPa. Steam is cooled at…

A: Given: The mass of steam, m = 0.9 kg The temperature of steam, T = 300°C The pressure of steam, P =…

Q: Two vessels A and B of different sizes are connected by a pipe with a valve. Vessel A contains 140 L…

A:

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.