A saturated liquid–vapor mixture of water, called wet steam, in a steam line at 1600 kPa is throttled to 50 kPa and 100°C. What is the quality in the steam line? Use data from the steam tables.

Q: Air is compressed by an adiabatic compressor from 95 kPa and 27°C to 600 kPa and 277°C. Assume…

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Q: Helium gas (C,=5.19 kJ/kgK, k=1.67) is compressed steadily from 100 kPa and 30°C to 600 kPa at a…

A: The given values are - P1= 100kPa, T1 =30°C =303 K, P2= 600kPaη=0.6 , k=1.67 , Cp=5.19 kJkgKFor an…

Q: An ideal gas (R= 0.2081 kJ/kgK, Cp=0.5203 kJ/kgK, Cv=0.3122 kJ/kgK) is compressed steadily from 100…

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Q: 3. Steam enters an adiabatic turbine at 4MPA and 350°C and expands to 75 kPa with an isentropic…

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Q: Propane initially at 300 K and 100 kPa is is compressed to 1 MPa in a reversible, steady-flow, and…

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Q: Superheated steam enters turbine at 360 oC and 500 kPa and exits at 8 kPa. Calculate the state at…

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Q: One Kilogram of steam is contained in a piston/cylinder device at 800 kPa and 200°C. (a) If it…

A: Given that: 1 kg of steam is contained in a piston cylinder arrangement at 800 kPa and 200 °C. (a)…

Q: The compressor of a refrigerator compresses saturated R-134a vapor at –10°C to 800 kPa. How much…

A: Plot the T-s diagram for a better understanding of the problem. Write the properties of the steam…

Q: An engineer has designed a steam turbine that has to satisfy at least 85% isentropic efficiency. The…

A: At entry :-4MPa,400° CAt exit:-100kpa, 100° C

Q: Air is compressed in an adiabatic compressor from 75 psia and 660 R to 290 psia and 1320 R.…

A: Given   Initial pressure, P1 = 55 psia    Final pressure, P2 = 270 psia Find  Isentropic efficiency

Q: An adiabatic compressor compressed steam from 4 MPa and 300 °C to 9 MPa isentropically. What is the…

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Q: One hundred kg of saturated steam at 100 kPa is to be adiabatically compressed in a closed system to…

A: Given data

Q: psia to a saturated steam with a quality of  x= 93% in an isentropic process.  What is the pressure…

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Q: QUESTION : Which of the two gases—helium or—nitrogenhas the higher final temperature as it is…

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Q: to 4 MPa. Determine the final temperature of the water and the work required, in kJ/kg, for this…

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Q: A 250 MW adiabatic steam turbine operating with inlet conditions of 1750 psia and 1000°F and an exit…

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Q: Steam at 4 MPa and 350°C is expanded in an adiabatic turbine to 120 kPa. What is the isentropic…

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Q: Refrigerant R134a enters an expansion valve at 800 kPa as a saturated liquid and exits at 100 kPa.…

A: Given:The initial pressure is .The final pressure is .The initial condition is saturated…

Q: Steam at 4 MPa and 350°C is expanded in an adiabatic turbine to 125 kPa. What is the isentropic…

A: Given:The steam enters at pressure is the entrance temperature is the exit pressure is

Q: ropane initially at 300 K and 100 kPa is is compressed to 1 MPa in a reversible, steady-flow, and…

A: The initial temperature of propane is The initial pressure of propane is The final pressure of…

Q: Helium (He) is compressed in an adiabatic compressor from an initial state of 0.9653 bar and 10°C to…

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Q: Saturated liquid water enters an adiabatic steady-flow throttle valve at 500 kPa and leaves at 100…

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Q: Determine the final temperature when air is expanded isentropically from 1680 kPa and 477°C to 100…

A: Given data:- Initial pressure (P1) =1680KPa, Initial temperature (T1)=477°C, Final pressure…

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.