Chapter 6, Problem 6.17P

4. A vessel with 8.0 g of helium gas follows the two-step process, 123, shown in the figure to the right. a) Qualitatively describe what is being done to the gas vessel in the two processes. b) Find the values of V₁, V3, P2, and T3. P2 2 atm 0 P 657°C 2 37°C- 1 V₁ Isothermal 3 V3 V

5. There are 3 kg/min of steam undergoing an isothermal process from 30 bar and 350 °C to 7 bar. (note 1 bar = 100 kPaa). Find: a) AS (kJ/k), b) Heat transferred (kJ), c) AH (kJ), d) AU (kJ)

HW4.pdf we/Desktop/FALL%202022/ENSC%202213%20-%20THERMO%20D/HWS/4/HW4.pdf + a) Temperature at the initial state in °C. 4) A liquid-vapor water mixture of 50% quality and equilibrium pressure of 1 bar (initial state) is heated to 280 °C (final state) in a rigid closed container. Calculate the following: b) Specific volume at the initial state in m³/kg. c) Specific internal energy at the initial state in kJ/kg. A d) Final pressure in bar. Don't interpolate. Find closest value from tables. f) Work done by the system in kJ/kg. (T) e) Specific internal energy at the final state (as determined in part (d)) in kJ/kg. g) Heat transferred to the system in kJ/kg. E

1-find the internal energy in KJ of 2 kg water contained in 1120 liter at P-1 bar & v= 0.56 m^3/kg.

1. A certain ideal gas Y has molecular weight of 25 g/mol and specific heat ratio of 3. Initially, Y has pressure of 200kPa and volume of 2m3. The volume was doubled during heat transfer. Find the heat transfer if it underwent a process described by ( a. n=1 b. n=Cp/Cv C. n=2

Q1: (A) kg of air is compressed causing its temperature to increase from 25K° to 100K°. If the specific heat constant, Cp(T) in KJ/Kg.K°, is given as follows: Cp(T)= 0.917+14.32x10$T-51.29x10°T? Find the amount of internal energy and enthalpy gained during the compression process.

One-quarter Ibmol of oxygen gas (O2) undergoes a process from p1 = 20 Ib;/in?, T1 = 500°R to p2 = 150 lbę/in?. For the process W = -500 Btu and Q = -227.5 Btu. Assume the oxygen behaves as an ideal gas. Determine T2, in °R, and the change in entropy, in Btu/°R.

3. Locate schematically in p-v and T-v diagrams the following states for water: a) p = 1.0 bar, T = 99.63 °C b) p = 1.0 bar, T= 250 °C %3! %3D c) p = 2.5 bar, T = 99.63 °C %3! d) p = 2.5 bar T = 250 °C %3D

:the initial quality (x1) is 2 kg of ammonia is contained in a rigid sealed tank at 10 °C. The surroundings temperature is 95 °C. The ammonia is now heated until all ammonia transferred to saturated vapor at 90 °C. Tank Ammonia, 2 kg Ti = 10°C T₂ = 90 c (Sat. Vap.) ₂ Tsum=95 C Below 0.2 O Between 0.2 and 0.4 O Between 0.4 and 0.6 O Between 0.6 and 0.8 O Above 0.8 O