Chapter 6, Problem 6.13P

Identify the Enthalpy of State 1 to 4 (h1, h2, h3 and h4)

One-quarter lbmol of oxygen gas (O2) undergoes a process from p1 = 20 lbf/in2, T1 = 500oR to p2 = 150 lbf/in2. For the process W = -500 Btu and Q = -140.0 Btu. Assume the oxygen behaves as an ideal gas. Determine T2, in oR, and the change in entropy, in Btu/oR.

Q.2 What will be change in entropy of the system if a piston-cylinder arrangement contains 0.06 m° of Nitrogen at 1bar and 295K is compressed isothermally until the pressure of the gas becomes 6 bar. A -0.0361 kJ/K B -0.0141 kJ/K C -0.530 kJ/K D -0.0260 kJ/K

One-quarter Ibmol of oxygen gas (O2) undergoes a process from p, = 20 lb:/in?. T1 = 500°R to p2 = 150 lby/in?. For the process W= -500 Btu and Q = -202.5 Btu. Assume the oxygen behaves as anideal gas. Determine T2, in °R, and the change in entropy, in Btu/PR. Step 1 Determine T2, in °R. T2 = °R Hint Save for Later Attempts: 0 of 1 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above.

C6 1.

find the changes in h  as appropriate. The initial state pressure is p1 = 0.5 MPa. the final state is 2.   a.  constant volume :                   v1 = 0.3 m3/kg,            p2 = 0.3 MPa; b. constant entropy :                    s1 = 6.3 kJ/kg K,        p2 = 0.15 MPa; c. constant volume :                    h1 = 2500 kJ/kg,          p2 = 0.2 MPa; d. constant enthalpy :                 s1 = 6.4 kJ/kg K,        p2 = 0.2 MPa;

Problem: Identify the Enthalpy of State 1 to 4 (h1, h2, h3 and h4)Note: Point 2 and 4 are saturated.Process 1-2 IsometricProcess 2-3 IsothermalProcess 3-4 IsometricProcess 4-1 Isothermalwhere: at point1; Entropy = 9 KJ/Kg-K and Pressure = 0.64 MPaat point3 X=0.2

2. The work required to compress a gas reversibly according to pV130 = C is 67,790 J, if there is no flow. Determine AU (in kJ) and Q (in kJ) if the gas is methane. For methane, k = 1.321, R = 518.45 J/kg-K, cv = 1.6187, cp = 2.1377 J/kg-K please draw the P-V and T-S diagrams

Answer on a piece of paper WITH COMPLETE AND CLEAR UNITS/CONVERSION FACTORS.