Question

An insulated cylinder is initially divided into halves by a frictionless, thermally conducting piston. On one...

An insulated cylinder is initially divided into halves by a frictionless, thermally conducting piston. On one side of the piston is 1 m3 of a gas at 300 K, 2 bar. On the other side is 1 m3 of the same gas at 300 K, 1 bar.The piston is released and equilibrium is attained, with the piston experiencing no change of state. Employing the ideal gas model for the gas, determine


(b) the final pressure, in bar.

(c) the amount of entropy produced, in kJ/K.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A 0.2 m3 piston-cylinder initially contains 400 K air. A heavy frictionless piston maintains a pressure...
A 0.2 m3 piston-cylinder initially contains 400 K air. A heavy frictionless piston maintains a pressure of 500 kPa abs. Then, a weakness in the cylinder wall blows out and creates a hole. Air escapes through the hole until the piston drops far enough to cover the hole. At that point, the volume is half the initial volume. During this process, 75 kJ of heat is transferred to the 100 kPa, 300 K surroundings. Using Cp = 1.005 kJ/kg-K and...
H3.3 A frictionless piston-cylinder device contains 2 kg of H2O initially at T1 = 300◦C and...
H3.3 A frictionless piston-cylinder device contains 2 kg of H2O initially at T1 = 300◦C and p1 = 5 bar. The device is cooled at constant pressure until the volume is ∀2 = 0.5 m3 . Assume a quasiequillibrium process which occurs slowly with no acceleration as the piston moves. Kinetic and potential energy effects are negligible. Determine: a. work [kJ] during process (indicate magnitude and direction) b. heat transfer [kJ] during process (indicate magnitude and direction)
An insulated cylinder is fitted with an airtight piston that is free to slide up and...
An insulated cylinder is fitted with an airtight piston that is free to slide up and down and is connected to a rod, as shown in the figure. Contained within the cylinder is an ideal gas initially at a pressure of 120 kPa and temperature of 293 K. Suddenly the piston is forced downward creating an additional 200 kPa of pressure on the gas and as a result the cylinder volume decreases to one-half of its original volume. (a) What...
A cylinder of indefinite height contains a frictionless and massless piston. The part of the cylinder...
A cylinder of indefinite height contains a frictionless and massless piston. The part of the cylinder above the piston is exposed to the atmosphere with P=1.000 atm. In the bottom of the cylinder are 5.000 kmoles of a liquid that has a boiling point equal to 320.0 K at P=1.000 atm., a heat of vaporization of 2.520 X 107J/kmole, and cp = a+bT-1  for the liquid phase, where a=3.000x104 J/kmole/K and b=2.500x104J/kmole. A. At constant pressure, how much heat is required...
An insulated cylinder is fitted with an airtight piston that is free to slide up and...
An insulated cylinder is fitted with an airtight piston that is free to slide up and down and is connected to a rod. Contained within the cylinder is an ideal gas initially at a pressure of 120 kPa and temperature of 293 K. Suddenly the piston is forced downward creating an additional 200 kPa of pressure on the gas and as a result the cylinder volume decreases to one-half of its original volume. (a) What is the final temperature of...
An ideal monatomic gas is contained within a cylinder by a moveable piston. The gas is...
An ideal monatomic gas is contained within a cylinder by a moveable piston. The gas is in thermal contact with a heat bath initially at 310 K. What is the change in molar entropy if the gas is heated to 600 K if: A. The piston is blocked B. The piston is allowed to move freely against atmospheric pressure
One mole of ethylene at 1 bar and 25C is placed inside a frictionless piston-cylinder device....
One mole of ethylene at 1 bar and 25C is placed inside a frictionless piston-cylinder device. The gas is then subjected to a two-step process: (1) by keeping the piston fixed with a lacking mechanism, 25KJ of heat is added via an electrical heater; and (2)the locking mechanism is then released and 15KJ of heat is removed. The second step of the process takes placed at constant pressure. Assuming ethylene is an ideal gas, determine the following: (a) The temperature...
A quantity of air is contained in a cylinder provided with a movable piston. Initially the...
A quantity of air is contained in a cylinder provided with a movable piston. Initially the pressure of the air is 4 × 107 N/m2 , the volume is 1.5 m3 and the temperature is 400 K. Assume air is an ideal gas. (a) What are the final volume and temperature of the air if it is allowed to expand isothermally from initial conditions until the pressure is 3 × 107 N/m2 and then is cooled at constant volume until...
Carbon dioxide (CO2) is compressed in a piston–cylinder assembly from p1 = 0.7 bar, T1 =...
Carbon dioxide (CO2) is compressed in a piston–cylinder assembly from p1 = 0.7 bar, T1 = 280 K to p2 = 14 bar. The initial volume is 0.2 m3. The process is described by pV1.25 = constant. Assuming ideal gas behavior and neglecting kinetic and potential energy effects, determine the work and heat transfer for the process, each in kJ, using constant specific heats evaluated at 300 K, and data from Table A-23.
1 kg of water in a piston cylinder arrangement is initially in a saturated liquid state...
1 kg of water in a piston cylinder arrangement is initially in a saturated liquid state at 1 bar. It undergoes expansion at constant pressure due to external heat supply to it, to a final state of saturated vapor. (i) What is the initial temperature of water in C? (a) 93.50 (b) 96.71 (c) 99.63 (d) 111.4 (e) 12.2 (ii) What is the change in enthalpy of water (kJ/kg-K)? (a) 417.46 (b) 2258.0 (c) 2675.5 (d) 2506.1 (iii) What is...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT