relationship P.V" = const.. Calculate: (1) the work done when a gas expands from a state 150 kPa and 0.03 m' to a final volume of 0.2 m for (n=1.3), and (2) show the process on P-V diagram

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Q: Thermodynamics problem. Saturated water occupies a volume of 1.2m3 . Heat is added until it…

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Q: Water at 200 kPa with a quality of 25% has its temperature raised 30 C in a constant pressure What…

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

Q: 2.7kg of water vapor at 500K and 100Pa is brought to a quality of 0.8 through an isothermal process.…

A: m = 2.7 kg water vaporP1 = 100 Pa = 0.1 kPaT1 = 500 K = 500 - 273 = 227 oCx2 = 0.8T1 = T2To find:…

Q: a. 8 MPa, 200 K b. 8kPa, 300K c. 150 K,v=0.05 m³/kg

A: Given: The critical temperature of methane is 190.7 k  Critical pressure of water is 45.8 atm

Q: Given: Ammonia, P = 1.05 bar, T = -39.7°C Find: u (kJ/kg) Your Answer:

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Q: piston-cylinder device initially contains 65-L of liquid water at 40C and 190 kPa. Heat is…

A: Given Data V1 =65 L =0.065 m3 State 1: 190 kPa, 40°C

Q: 3-26 Complete this table for refrigerant-134a: T, °C P, kPa v, m2/kg Phase description -4 320 10…

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Q: why is quality of vapour 0 for state 3? shouldnt it be 0.5 as the qn stated that half of the…

A: At the end of the process at state 3 the half of the cylinder is filled with liquid and other half…

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.