A perfect gas has a value of R = 316 J/kg-K and k = 1.26. If 21 kJ of heat are added to 2.5 kg of this gas during an isometric process when the initial temperature is 32 deg. C, determine: (a) the final temperature in deg. C 312 292 39   (b) the change in enthalpy in kJ 28.46 26.46 23.46   (c) the change in entropy in kJ/K 0.087 0.167 0.067

Q: during the process from the initial temperature of (30×1.6)°C down to the final temperature of 20°C.…

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Q: 2. An ideal gas undergoes a process from state 1 ( T1= 300 K, P1= 100 kPa) to state 2 ( T2= 600 K,…

A: Given, T1 = 300 K P1 = 100 kPa T2 = 600 K P2 = 500 kPa Cp = 1 kJ/kg-K Cv = 0.7 kJ/kg-K   Gas…

Q: 1. Ethane, initially at 35 kPa with a volume of 0.12 m³, is compressed frictionlessly in a cylinder…

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Q: ding to experiments, a certain material's specific heat capacity at constant pressure is given by…

A: Given:2=Cp20.67-Cpm=0.175 KgT1=25°CT2=50°C

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Q: (B) Determine the following properties for Superheated water vapor at 30 bar and 440 °C (i) Specific…

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Q: 1 kg of saturated liquid water at 85 C (degree Celsius) is being heated until it becomes saturated…

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Q: Water contained in a closed, rigid tank, initially at 100 lbf/in², 800°F, is cooled to a final state…

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Q: This question requires the use of the Thermodynamic Property Tables supplied as additional material.…

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Q: When a system undergoes a Isochoric process (P = 5 bar), the change in internal internal is 5 kJ and…

A: Isochoric Process: the process in which the volume of the process is constant throughout the process…

Q: Air, 5.37 kg, is compressed in a piston‑cylinder device from 91.3 kPa and 65.3 ∘C to 195.2 kPa in an…

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Q: An electric resistance heater submerged in 4-kg water (T, = 20 °C, C, = 4.18 kJ/kg.K) is turned on…

A: The correct answer is 1.526 kJ/K

Q: 10. A gas initially at 15 psia and 2 cu ft undergoes a process to 90 psia and 0.60 cu ft, during…

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Q: Apply the second law to develop the absolute thermodynamic temperature scale.

A: Consider two reversible heat engines HE1 and HE2 are connected in series as shown in the figure.

Q: 1-kg copper part, initially at Tc= 400 degrees C, is plunged into a tank containing 5 kg of liquid…

A: Given Data  Mass of the copper, m=1Kg Tc=400°C Cc= 0.385 kJ/kg-K Mass of the water, mw=4Kg Tw= 30°C…

Q: Q.6 A 75 ohm resistor carrying a constant current of 1 A is kept at a constant temperature of 27 °C…

A: Data given-  R = 75 ohm  I = 1 Ampere  T = 27°C = 300 K  t = 1 sec

Q: 6.64 mol of an ideal gas at 9.1°C are com- pressed isothermally from an initial volume of 127 cm to…

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Q: An oxygen gas R = 0.2598 KJ/kg°k and k = 1.395. If 4 kg of oxygen undergo a reversible non flow…

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Q: 4 kg block of steel initially at 447 °C is dropped into an insulated tank that contains 20 kg of…

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Q: An ideal gas whose R = 25.8 ft-lbf/lbm-R and k = 1.09 was cooled from 636 R to 565 R at constant…

A: T1 = 636 R T2 = 565 R R = 25.8 ft-lbf/lbm-R k = 1.09

Q: R-134a enters a well-insulated diffuser as a saturated vapor at P, = 100 lbf/in2 with a velocity of…

A: Given: The pressure at the inlet of diffuser, P1 = 100 lbf/in^2 The velocity at the inlet of…

Q: Air (R=0.287 kJ/kg.K, c-1.005 kJ/kg.K) is contained in a piston cylinder device, it expands first…

A: Given: v1=0.2 m3/kgv2=0.53 m3/kgv3=0.74 m3/kgPmax=600 kpaTmin=673 K

Q: Saturated water-Pressure table Specific volume, mkg Internal energy kikg Enthalpy, Entropy. kig K…

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Q: Mass contains entropy as well as energy, and thus mass flow into or out of a system is always…

A: It is true that the mass contains both entropy and energy. When the mass is doubled, so are the…

Q: Air of mass 1 kg, initially at 300 K and 10 bar, is allowed to expand isothermally till it reaches a…

A: Given:mass of the air,m=1 kgpressure of the air, P=10 barTemperature of the air, T=300 Kfinal…

Q: 0.25kg/s of Carbon Dioxide (R=0.1889 kJ/kg-K, k=1.289) undergo a certain process in a close system…

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Q: Determine the change in specific entropy, in kuikg K. of CO2 as an ideal gas undergoing a process…

A: Calculated the change in specific entropy in kJ/kg k.

Q: Complete the table below. Show your solutions and draw the corresponding T-s diagram for each case…

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Q: Air exits a turbine at 160 kPa and 150°C with a volumetric flow rate of 8000 liters/s. Modeling air…

A: Given data: Exit pressure of the air,P2=160 kPa The exit temperature of the air,T2=150oC=150+273=423…

Q: Nitrogen is cooled at a constant pressure of 1200 P final specific volume of 0.75 m³/kg. If the mass…

A: GivenP=1200PaV1=1.80 m3/kgV2=0.75 m3/kgCp=1.0399 kJ/kgKk=1.399m=2.26kg

Q: During a reversible polytropic process, the following data were observed: V: = 4.3 ft', p: = 28.2…

A: Given data: The initial volume, V1 = 4.3 ft3. Initial pressure, P1 = 28.2 psia. Final volume, V2 =…

Q: Find the heat transfer to the sealed container. b) Find the exergy that disappears during the…

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Q: change in entropy S2 - S1 (in j/kg-K) is

A: Given data; One kg of air;  R= 287 j/kg-K State 1;   T1=200C    v1=0.9 m3  State 2;     T2=200C…

Chemical and Phase Equilibrium

Phase diagrams or equilibrium phase diagrams are the graphical representations that show the phase transformations of the constituting elements with respect to the pressure, temperature, and compositions. The diagrams show the conditions that limit the different phases, namely solid, liquid, and gas. The diagram can also be utilized to verify the relations between the state variables. Most of the phase diagrams are temperature-pressure phase diagrams, with the variable parameter as the composition. Usually other variables such as solubility and pressure parameters are not indicated in the phase diagram. For a one-component system (unary phase diagram), the phase diagram is generally a function of temperature and pressure as the state variables, or temperature and volume. However, for a binary system (two-phase) having two components, the phase diagram is a function of temperature and composition as the state variables only. Coexisting of the different phases of the constituting elements is indicated in the phase diagram. A ternary phase diagram can be characterized by consisting of three phases in equilibrium.