Steam at 3.5 MPa initially has a temperature of 350C. It was then cooled in an isobaric process until all of it was turned into saturated liquid. Solve for the change in enthalpy.

Q: We have refrigerant R-134a at a temperature of 30 C and a specific enthalpy of 127 kJ/kg. Find the…

A: According to the given data A refrigerant R-134a is at T= 30 C h=127 kJ/kg. we need to find The…

Q: 2kg of air occupying 0.7 m3, had an original temperature of 15°C. It was heated then at constant…

A: Given that, mass of air =2kg volume of air =0.7m3 initial temperature=15°C…

Q: A 200 liter tank initially contains water at 1000 kPa and 1% quality. There is a heat transfer to…

A: Given that: V = volume of the tank = 200 liters P1 = initial pressure = 1000 kPa x1 = initial…

Q: 8. How much steam at 120 °C is needed to change 1 kg of ice at -10 °C to water at 10°C?

A:

Q: Saturated liquid water at 5 bar is heated until it is superheated steam at 30 bar and 650ºC.  What…

A:

Q: An isolated cylinder contains saturated water at 200oC. The cylinder initial volume was 25 L. The…

A: Ghhjjkkkk

Q: Argon is kept in a rigid 5-m³ tank at –30°C and 3 MPa. Determine the mass using the compressibil-…

A: Given         Volume, V = 5 m3        Pressure, P = 3 MPa Temperature, T = -30oC Find    Mass, m…

Q: What is the final pressure in psia?

A:

Q: One pound of air at 17.2 psia, 450 F is heated at constant volume until the temperature becomes 630…

A: Write the given data with suitable variables: m=1 lbmP1=17.2 psiaT1=450 °FT2=630 °F

Q: Five kg of air at 100 kPa and 25oC are compressed according to the law PV1.3 = C until its pressure…

A:

Q: An ideal gas at 27 oC is heated at constant pressure till the volume becomes three times. The…

A:

Q: Saturated liquid water at 500 kPa is throttled to a pressure of 200kPa. What is the finial…

A: According to the given data P1=500KPa and quality x=0 (Saturated liquid) P2=200KPa Throattling…

Q: The tank contains 2kg of water at 20C, 1 atm. The tank is heated. When the tank pressure reaches…

A: Write the given data. m1=2 kgT1=20 °CP1=1 atmP2=300 kPa

Q: work against the piston. How much work is done during the process? How much error would be made by…

A: To determine the work done in the process and percentage error in the steam behaviour in ideal…

Q: For the situations below briefly explain how you obtained the values and provide the numerical…

A: It is required to determine properties for given process

Q: You have steam at 700°C with specific volume 0.230.  Calculate its specific enthalpy in KJ/kg.

A: Calculated specific enthalpy in KJ/kg.

Q: e final state determine the enthalpy of a superheated water vapor at 1.5 MPa and 280C is allowed to…

A: Taking reference of NIST steam tables for 1.5 MPa & 280  C we get 2993.3 kJ/kg

Q: Water with a quality of 53.5% and pressure of 200 kPa is inside a rigid tank.The tank is heated by…

A: Given, Quality of the water (x)=0.535 Pressure of water=200kPa heat supplied by the heater=120W…

Q: 4. A rigid tank initially contains 5kg of saturated vapor steam at 150°C. Heat transfer is done…

A:

Q: Steam is expands from a pressure of 4 bar and 70°C to a pressure of 1.4 bar. If the expansion is n…

A: The answer is in below steps

Q: Required information A piston-cylinder device contains 0.66 kg of steam at 300°C and 0.5 MPa. Steam…

A: Write the given values with the suitable variables.Here, m, T, and P are the mass, temperature, and…

Q: A. Two kg of steam with a quality of 22 percent is heated at a constant pressure of 300 kPa until…

A:

Q: 0.75 Ibm of oxygen is initially at 30 psi and 50°F. The oxygen expands in an isobaric process until…

A: Given data: Mass of Oxygen, m=0.75 lbInitial pressure, P1=30 psiInitial temperature, T1=50°FFinal…

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.