A piston-cylinder device initially contains air at 170 kPa and 30°C. At this state, the piston is resting on a pair of stops, and the enclosed volume is 600 L. The mass of the piston is such that a 400-kPa pressure is required to move it. The air is now heated unti its volume has increased by 3X. Determine the following: (a) the final temperature (b) the work done by the air (c) The total heat transferred to the air. www.www AIR P1 170 KPa T1 30 °C V1 600 L PIN 400 0 170 0.6 1.8 V

Q: A frictionless piston-cylinder device initially contains 200 L of saturated liquid refrigerant-…

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Q: (a) the final temperature, (b) the work done during this process, (c) the total heat transfers

A: Given: V1=0.9 m3 P1=350 kPa P2=400 kPa To determine: the final temperature, (b) the work done during…

Q: he piston cylinder system shown below contains R-410a at 20°C and 100 kPa. If the temperature of the…

A: Given:R-410aT=210°CP1=100 kPaT2=50°C

Q: takes 675 J of work to compress quasi- culate the temperature

A: we have to determine the temperature of a isothermal system undergoing compression

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Q: Refrigerant-134a at 320 kPa and 40°C undergoes an isothermal process in a closed system until its…

A: To find :  The required magnitude of work  Given :  The pressure is  P1=320 kPa, The Temperature is…

Q: A piston cylinder device contains 0.850 kg of refrigerant-134a at -10.0°C. The piston that is e and…

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Q: A piston/cylinder setup contains 1 kg of air at 20°C with an initial volume of V1=0.1 m3. Initially,…

A: For solution refer below images.

Q: Steam is contained in a 2-L volume at a pressure of 2.0 MPa and a temperature of 400°C. If the…

A: Givenvolume of the steam v=2ltr=2×10-3 m3pressure, P=2MPatemperature T=400oCheat added Q=20kJ

Q: Consider a closed piston cylinder that contains 0.2 kg of superheated water vapor at 200C and…

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Q: A piston-cylinder container contains 14 lbm of refrigerant 134a at 180 psia with an internal energy…

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Q: An insulated, vertical piston–cylinder device is purchased from a manufacturer. Upon purchase, it…

A: From the steam table, the specific enthalpy of the saturated water at 200C is 83.9199 kJ/kg. From…

Q: A 12-ft3 tank contains oxygen at 15 psia and 80◦F. A paddle wheel within the tank is rotated until…

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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.