Question

In: Mechanical Engineering

A piston and cylinder device (closed system) contain 2.25 mol of an ideal gas which is...

A piston and cylinder device (closed system) contain 2.25 mol of an ideal gas which
is compressed irreversibly at constant temperature from 423 K and 200 kPa to 8 bar.
The irreversible work applied for the compression is 15 % larger than the reversible
work for the same process. Determine the entropy change of the gas, the
surroundings and the total entropy change if the heat is rejected from the gas to
surroundings maintained at 25 oC.

Solutions

Expert Solution

samet mamat answered 1 month ago
Next > < Previous

Related Solutions

An ideal gas is contained in a piston-cylinder device and undergoes a power cycle as follows:...
An ideal gas is contained in a piston-cylinder device and undergoes a power cycle as follows: 1-2 isentropic compression from an initial temperature T1 5 208C with a compression ratio r 5 5 2-3 constant pressure heat addition 3-1 constant volume heat rejection The gas has constant specific heats with cv 5 0.7 kJ/kg·K and R 5 0.3 kJ/kg·K. (a) Sketch the P-v and T-s diagrams for the cycle. (b) Determine the heat and work interactions for each pro- cess,...
Thermodynamics An insulated piston/cylinder device contains ideal CO2 gas at 800 kPa, 300 K, which is...
Thermodynamics An insulated piston/cylinder device contains ideal CO2 gas at 800 kPa, 300 K, which is then compressed to 6 MPa in a reversible adiabatic process. Determine the final temperature and the specific work during the compression process using: (a) Ideal gas tables A.8, (b) Constant specific heats A.5.
One mole of an ideal gas (CP = 5R/2) in a closed piston/cylinder is compressed from...
One mole of an ideal gas (CP = 5R/2) in a closed piston/cylinder is compressed from Ti = 298 K, Pi = 0.1 MPa to Pf = 0.25 MPa by the following pathways. For each pathway, calculate ΔU, ΔH, Q, and WEC: (a) isothermal; (b) constant volume; (c) adiabatic. i need your help as soon as possible please!!! please give me step by step so i can understand it Thank you!
A cylinder containing ideal gas is sealed by a piston that is above the gas. The...
A cylinder containing ideal gas is sealed by a piston that is above the gas. The piston is a cylindrical object, with a weight of 36.0 N, which can slide up or down in the cylinder without friction. The inner radius of the cylinder, and the radius of the piston, is 7.00 cm. The top of the piston is exposed to the atmosphere, and the atmospheric pressure is 101.3 kPa. The cylinder has a height of 30.0 cm, and, when...
Constant amount of ideal gas is kept inside a cylinder by a piston. The piston is...
Constant amount of ideal gas is kept inside a cylinder by a piston. The piston is locked in to position, it is not allowed to move. The gas is then heated up. Compare the initial (i) and the final (f) physical quantities of the gas to each other. (The fill in the blank options are greater than, less than, or equal too). The volume Vf is ... Vi. The temperature Tf is ... Ti. The internal energy Uf is ......
Type or paste que One mole of an ideal gas CP=7R2 in a closed piston/cylinder arrangement...
Type or paste que One mole of an ideal gas CP=7R2 in a closed piston/cylinder arrangement is compressed from Ti=200 K , Pi=0.5 MPa to Pf=5 MPa by following paths:. ADIABATIC path ISOTHERMAL path Calculate ΔU, ΔH, Q and WEC for both paths. NOTE: Keep the answers in terms of ‘R’. stion here
A piston-cylinder apparatus contains initially 1.2 mol of ideal gas at 6 bar and 25°C. Then...
A piston-cylinder apparatus contains initially 1.2 mol of ideal gas at 6 bar and 25°C. Then the piston is moved downward to increase the pressure to 12 bar pressure. You can ignore the change in potential energy associated with the piston moving. a. Write the First Law of Thermodynamics and simplify for this problem given that temperature of the system changes. b. Assuming Isothermal operation what are the initial and final volumes of gas for the above process (L)? c....
The drawing shows an ideal gas confined to a cylinder by a massless piston that is...
The drawing shows an ideal gas confined to a cylinder by a massless piston that is attached to an ideal spring. Outside the cylinder is a vacuum. The cross-sectional area of the piston is A = 2.50 × 10-3 m2. The initial pressure, volume, and temperature of the gas are, respectively, P0, V0 = 6.00 × 10-4 m3 and T0 = 273 K, and the spring is initially stretched by an amount x0 = 0.090 m with respect to its...
The drawing shows an ideal gas confined to a cylinder by a massless piston that is...
The drawing shows an ideal gas confined to a cylinder by a massless piston that is attached to an ideal spring. Outside the cylinder is a vacuum. The cross-sectional area of the piston is A = 2.50 × 10-3 m2. The initial pressure, volume, and temperature of the gas are, respectively, P0, V0 = 6.00 × 10-4 m3 and T0 = 273 K, and the spring is initially stretched by an amount x0 = 0.092 m with respect to its...
1mol of an ideal gas is inside a cylinder with a piston under a pressure of...
1mol of an ideal gas is inside a cylinder with a piston under a pressure of 6 atm. When reducing the pressure to 2 atm at constant T = 300K: (a) Who is doing work, the piston or the gas? (b) What is the type of process for the maximum work? Find the maximum amount of work. (c) What is the type of process for the minimum work? Find the minimum amount of work.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT