If a gas is compressed isentropically such that: P1 = initial pressure in Pa P2 =...
If a gas is compressed isentropically such that:
P1 = initial pressure in Pa
P2 = final pressure in Pa
V1 = initial volume in m3
V2 = final volume in m3
T1 = initial temperature in K
T2 = final temperature in K,
then prove the following relationship: ?1?−1?1 = ?2?−1?2
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If a gas is compressed isentropically such that:
P1 = initial pressure in Pa
P2 =...
A gas is compressed from V1 = 0.3 m3, p1 = 1 bar to V2 =...
A gas is compressed from V1 = 0.3 m3, p1 = 1 bar to V2 = 0.1 m3, p2 = 1.9 bar. Pressure and volume are related linearly during the process. For the gas, find the work, in kJ.
2 moles of compressed air (diatomic gas) in a cylinder under the initial condition T1=573K p1=500kPa....
2 moles of compressed air (diatomic gas) in a cylinder under the initial condition T1=573K p1=500kPa. Found v1=0.019m^3 but can not remember then how to find V2. I think that it has something to do with T1=T2 condition then P2 can be found.... but stuck on how to proceed so with FULL written explanations with working would be much appreciated! All question info on practice exam below - note ISOTHERMAL EXPANSION. for part ii which after an explanation first. Two...
A stoichiometric mixture of ethanol (C2H6O), octane (C8H18), and air initially at T1 = 300 K,...
A stoichiometric mixture of ethanol (C2H6O), octane (C8H18), and air initially at T1 = 300 K, P1 = 100 kPa, P2 =4500 kPa, and V1 = 5 liters (0.005 m3) is compressed in a piston-cylinder assembly in a polytropic process where n = 1.2 What is the final volume V2 (m3 ), the initial total volume of moles (kmol), and the final Temperature T2? NOTE: Universal gas constant: Ru = 8.314 k]/ kmolK Please show ALL steps and units with...
A sample of gas at 760 torr and 2.8 L is compressed at constant temperature to...
A sample of gas at 760 torr and 2.8 L is compressed at constant temperature to the pressure at 3.5 atm. What is the final volume of the gas? My biggest problem with answering this question is the fact that I don't know what the "constant temperature" is..I know I'm using the combined gas law with formula: V2= p1v1/t1p2 * T2 and that p1=760 torr or 1 atm, v1=2.8L and p2=3.5 atm... Any help on this is very much appreciated.
A sample of gas expands from V1 = 1.1 m3 and p1 = 46 Pa to...
A sample of gas expands from V1 = 1.1
m3 and p1 = 46 Pa to
V2 = 4.8 m3 and
p2 = 18 Pa along path B in the
p-V diagram in the figure below. It is then compressed
back to V1 along either path A or path
C. Compute the net work done by the gas for the complete
cycle along (a) path BA and
(b) path BC.
0
Situation 1: A gas expands at constant pressure P1 from volume V1 to volume V2. It...
Situation 1: A gas expands at constant pressure P1 from volume V1 to volume V2. It is then kept at constant volume while the pressure is reduced to P2. Situation 2: A gas is reduced in pressure from P1 to P2 while its volume is held constant at V1. It is then expanded at constant pressure P2 to a final volume V2. In which of the processes is more work done by the gas? Why?
Thermodynamics- Gas mixture compression An ideal gas mixture at P1 and T1 is compressed in a...
Thermodynamics- Gas mixture compression
An ideal gas mixture at P1 and T1 is compressed in a piston
cylinder assembly first isothermally to P2 and then isentropically
(reversible and adiabatic) to T3. Assuming variable specific heats
(use ideal gas tables) determine the following given the properties
listed below.
--Given Values--
m_O2 (kg) = 0.38
m_N2 (kg) = 0.34
T1 (K) = 650
P1 (bar) = 1.32
P2 (bar) = 2.52
T3 (K) = 738
1. Determine the pressure (bar) at state...
An ideal gas has initial volume of 0.380 m3 and pressure of 9.80 ✕ 104 Pa....
An ideal gas has initial volume of 0.380 m3 and pressure of 9.80 ✕ 104 Pa. (a) If the initial temperature is 284 K, find the number of moles of gas in the system. (b) If the gas is heated at constant volume to 387 K, what is the final pressure?
1.2 moles of ideal gas in a cylinder are compressed isothermally from an initial pressure of...
1.2 moles of ideal gas in a cylinder are compressed isothermally from an initial pressure of 120 kPa and a volume of 0.025 m3 to a final volume of 0.004 m3. Calculate the temperature and the final pressure of the gas; and also estimate the work done on the gas.
8. Initially, 1 mole of the real gas is contained in a thermally insulated piston-cylinder arrangement...
8. Initially, 1 mole of the real gas is contained in a thermally insulated piston-cylinder arrangement in an initial state (T1, P1, Vi ). 1 mole of the real gas that is expressed by the following equation of state under the investigation. Now, the gas is expanded so as to fill the final state of (T2, P2, V2 ). Suppose that any possible temperature dependence of Cy is negligibly small and the molar heat capacity is approximately equal to 2"...
A sample of gas expands from V1 = 1.1
m3 and p1 = 46 Pa to
V2 = 4.8 m3 and
p2 = 18 Pa along path B in the
p-V diagram in the figure below. It is then compressed
back to V1 along either path A or path
C. Compute the net work done by the gas for the complete
cycle along (a) path BA and
(b) path BC.
0
Thermodynamics- Gas mixture compression
An ideal gas mixture at P1 and T1 is compressed in a piston
cylinder assembly first isothermally to P2 and then isentropically
(reversible and adiabatic) to T3. Assuming variable specific heats
(use ideal gas tables) determine the following given the properties
listed below.
--Given Values--
m_O2 (kg) = 0.38
m_N2 (kg) = 0.34
T1 (K) = 650
P1 (bar) = 1.32
P2 (bar) = 2.52
T3 (K) = 738
1. Determine the pressure (bar) at state...
8. Initially, 1 mole of the real gas is contained in a thermally insulated piston-cylinder arrangement in an initial state (T1, P1, Vi ). 1 mole of the real gas that is expressed by the following equation of state under the investigation. Now, the gas is expanded so as to fill the final state of (T2, P2, V2 ). Suppose that any possible temperature dependence of Cy is negligibly small and the molar heat capacity is approximately equal to 2"...
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