Chapter 6, Problem 6.10P

Please answer (a), (b), (c).

One-quarter Ibmol of oxygen gas (O₂) undergoes a process from p₁ = 20 lb/in², T₁ = 500°R to p₂ = 150 lb/in². For the process W= -500 Btu and Q = -140.0 Btu. Assume the oxygen behaves as an ideal gas. Determine T2, in "R, and the change in entropy. in Btu/°R. Step 1 Determine T₂, in °R. Your answer is correct. T₂- 78862 Hint Step 2 * Your answer is incorrect. A$12 Determine the change in entropy, in Btu/°R. °R i 0.1968 eTextbook and Media Btu/ºR Attempts: 1 of 4 used

One-quarter Ibmol of oxygen gas (O₂) undergoes a process from p₁ = 20 lbf/in², T₁ = 500°R to p2 = 150 lbf/in². For the process W = -500 Btu and Q = -177.5 Btu. Assume the oxygen behaves as an ideal gas. Determine T2, in °R, and the change in entropy, in Btu/°R.

One-quarter Ibmol of oxygen gas (O2) undergoes a process from p1 = 20 lb/in?, T1 = 500°R to p2 = 150 lb;/in?. For the process W = -500 Btu and Q = -202.5 Btu. Assume the oxygen behaves as an ideal gas. Determine T2, in °R, and the change in entropy, in Btu/°R.

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.

1 m3 of air is heated reversibly at constant pressure from 15°C to 350°C, and is then cooled reversibly at constant volume back to the initial temperature. The initial pressure is 1.03 bar. Take Cp, Çx and R as 1.005 kJ/kg,K , 0.718 kJ/kg. K and 0.287 kJ/kg,K respectively. 1. a) Sketch the processes on a T-s diagram. b) Calculate (i) the net heat flow, and (ii) the overall change of entropy.

One-quarter Ibmol of oxygen gas (O2) undergoes a process from p1 = 20 lbf/in?, T1 = 500°R to p2 = 150 lbf/in?. For the process W = -500 Btu and Q = -152.5 Btu. Assume the oxygen behaves as an ideal gas. Determine T2, in °R, and the change in entropy, in Btu/°R.

C6 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