Concept explainers
Is it reasonable to assume that at the given states the substance behaves as an ideal gas?
a. Oxygen at
b. Methane at
c. Water at
d.
e.
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Chapter 2 Solutions
EBK FUNDAMENTALS OF THERMODYNAMICS, ENH
- 1. Complete the following table. Show the states on the T-v diagram Substance T°C P, KPa Internal Energy. Enthalpy, Specific volume, Quality, X Phase description u, kj/kg h, kj/kg v, m'/kg Pg 98 pa H,0 200 10000 H,O 600 2000 R-134a 900 180arrow_forward2 properties are given to define the state of water using pure substance tables given below. Determine the properties or properties requested from you, asked for the following situations, using thermodynamic tables, and show each operation on your paper.a. T=200°C, x=0.95 ν=?b. P=0.275 mPa, ν=0.05 m3 / kg, x=?c. x = 1.0, ν=0.8 m3 / kg, P=? T=?d. P=1700 kPa, T=3000°C, x=? h=? Phase State=?e. T=5000°C, h=3487.7 kJ / kg, P=? x=? ν=?arrow_forwardDetermine the state of water if P= 25 bar and T= 150 C. Select one: O a. Superheated Vapor O b. Mixture O c. Compressed liquidarrow_forward
- An ideal gas contained in a piston-and-cylinder device undergoes a thermodynamic cycle made up of three quasi-equilibrium processes. Step 1-2: Adiabatic compression from 330 K and 9.35 atm to 12.58 atm Step 2-3: Isobaric cooling Step 3-1: Isothermal expansion c.) Calculate Q, W, ΔU and ΔH, in J/mole, for each step in the process and for the entire cycle. Assume that CP = (5/2) R. d.) Is this cycle a power cycle or a refrigeration cycle? Explain. Calculate the thermal efficiency or COP of the cycle, whichever is appropriate.arrow_forward2.00-mol of a monatomic ideal gas goes from State A to State D via the path A→B→C→D: State A PA=10.5atm, VA=11.00L State B PB=10.5atm, VB=6.00L State C PC=24.0atm, VC=6.00L State D PD=24.0atm, VD=23.50L Assume that the external pressure is constant during each step and equals the final pressure of the gas for that step. Calculate q for this process. Calculate w for this process. Calculate ΔE for this process Calculate ΔH for this process.arrow_forwardA pipe with a valve connects two vessels A&B of different sizes. Vessel A contains 142L of air at 27.7 bar, 93.33 deg C. Vessel B, of unknown volume contains air at 68.95 kPa, 4.44 deg C. The valve is opened and when the properties have been determined, it is found that the pressure of mixture is 200 psi and the temperature is 43.33 deg F. What is the volume of vessel B?arrow_forward
- Determine the state of water if P= 130 bar and T= 288 C. Select one: a. Superheated Vapor b. Compressed liquid c. Mixturearrow_forwardDetermine the properties of propane in gaseous state with the help of generalized compressibility charts according to the conditions given below. Compare the results obtained with the ideal gas equation of state. a) Specific volume at 7 MPa, 150 ℃ b) Pressure at 150 ℃, 0.006 m3 /kg c) Temperature at 0.006 m3 /kg, 7 MPa THERMODYNMAICSarrow_forwardTOPIC: PROPERTIES OF SUBSTANCES: Note: The pressure values are absolute values unless specified. Determine the properties of H2O with units according to the following Table: Sketch of location of point in TS diagram below using P, T and x lines as applicable CONDITIONS: 1. Liquid at P = 20 Mpa and T= 190 C 2. Saturated liquid at T = 223.75 deg C 3. Steam with quality of 90 % at P = 6.7 Mpa 4. Dry steam at P = 18.05 Mpa 5. Steam at T =167 C, moisture = 3% 6. Steam with P = 3.42 Mpa and T = 460 C 7. Steam at 17.398675 Mpa gage, T=454.75 C 8. Steam at P = 17.0 Mpa, deg SH = 60 C 9. Saturated vapor at 40 bars 10. Boiling Point of H2O in deg Celsius at atmospheric pressure of 0.19 Mpa ; ANSWERS: h = V = U= S= h = U= S= h = U= S= h = U= V = U= V= h = S= T boiling point = in a pdfarrow_forward
- Determine the state of water if P= 150 bar and T= 237 C. Select one: a. Mixture O b. Superheated Vapor O c. Compressed liquidarrow_forwardHW1- Complete the following table for H₂O. Write the details of the solution and show each state on a Tv diagram State T, °C 2 3 5 140 125 500 P, kPa 550 750 500 v, m³/kg 0.05 0.140 h, kJ/kg phase description 2890 Saturated liquidarrow_forward2. Given a closed container of volume 1 L containing 50 g of helium gas, calculate the following: a. The pressure at T = 6 K, assuming that the gas is an ideal gas. b. The pressure at T of state. = 6 K, assuming that the gas obeys van der Waal's equation c. The pressure at T 6 K, assuming that the gas obeys the virial equation of state truncated after the second term. = d. The state of the fluid at T = 4.2 K. (Hint: 4.2 K is below T. and 50 kg/m³ is greater than p, @ 4.2 K.)arrow_forward
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