Chapter 6, Problem 6.9P

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.

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

4. Choose the correct statement/s with respect to entropy change during a process a. Entropy increases with increase in pressure at constant temperatureb. Entropy increases with increase in temperature at constant pressurec. Entropy can be kept constant by systematically increase both pressure and temperatured. Entropy can not be changed

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.

Water contained in a closed, rigid tank, initially at 100 lbę/in?, 800°F, is cooled to a final state where the pressure is 40 Ib;/in?. Determine the quality at the final state and the change in specific entropy, in Btu/lb•°R, for the process.

HW4.4. Enthalpy Change of Water 22 kg of water, initially at 80 °C and 2 bar, occupying 0.06 m³ undergoes a process in which it attains a final state of 100 ° C and 300 bar. Assume that under these conditions the water can be treated as an incompressible fluid with specific heat, c(T) = 0.005 kJ/kg. K² XT + 2.19 kJ/kg.K. AH = 2 Correct answer ΔΗ – 3550.53 kJ = kJ X 0% Try a new variant

Determine the change in specific entropy, in kJ/kg K, of CO2 as an ideal gas undergoing a process from T, = 300 K, p, = 1 bar to T2 = 1420 K. P2 = 5 bar. Additional information g°= 1.70203 KJKG K °2 = 3.37901 kJikg K 1.215 kJ/kg. °C 1.215 kJkg. K 0 1.190 kJ/kg K O 1.373 kJ/kg K

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.

C6 1.