Chapter 6, Problem 6.1P

One-quarter Ibmol of oxygen gas (O₂) undergoes a process from p₁ = 20 lbf/in², T₁ = 500°R to p₂ = 150 lb/in². 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.

can water ever acts counter to entropy to perhaps stop a reaction from moving forward?

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.

A non-flow reversible process occurs for which pressure and volume are correlated by the expression p = (V2 + 6/V) where p is in bar and V is in m³. What amount of work will be done when volume changes from 3 to 5 m³?

A rigid, insulated vessel is divided into two compartments connected by a valve. Initially, one compartment, occupying 1.0 ft, contains air at 50 lb/in?, 750°R, and the other, occupying 2.0 ft?, is evacuated. The valve is opened and the air is allowed to fill both volumes. Assume the air behaves as an ideal gas and that the final state is in equilibrium. Determine the final temperature of the air, in °R, and the amount of entropy produced, 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 = -152.5 Btu. Assume the oxygen behaves as an ideal gas. Determine  the change in entropy, in Btu/oR.

Find the missing properties and give the phase of the substance. (a) H2O s = 1.75 Btu/lbm R, P = 4 lbf/in.2 h = ? T = ? x = ? (b) H2O u = 1350 Btu/lbm, P = 1500 lbf/in.2 T = ? x = ? s = ? (c) R-134a T = 30 F, P = 35 lbf/in.2, s = ? x = ? (d) R-134a T =10 F, x = 0.45 v = ? s = ? (e) NH3 T = 60 F, s = 1.35 Btu/lbm R u = ? x = ? Provide details with explanations of your work. Use appropriate property diagram(s) to assist in the understanding and solution of the problems. Summarize your results in a clearly annotated and labelled Table of Results.

Use image below Part A - Evaluate the volume and internal energy of the air in the initial state 1, in the intermediate state 2, and in the final dead state DS. Also evaluate the temperature of the air in the intermediate state 2. PArt B - Plot the processes 1 → 2 → DS on P–v, T–v, P–s, and T–s diagrams. Mark states 1, 2, and DS on the graphs, and make sure that it is clear when a given quantity increases, decreases, or remains constant.

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