A gas initially at atmospheric pressure (100 kPa) in a box 10 cm on a side...
A gas initially at atmospheric pressure (100 kPa) in a box 10 cm on a side is isothermally compressed to one half its original volume. What is W for this process?
Homework Answers
Considering the gas to be an ideal gas
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A gas initially at atmospheric pressure (100 kPa) in a box 10 cm
on a side...
An ideal gas with γ=1.4 occupies 5.0 L at 300 K and 100 kPa pressure and...
An ideal gas with γ=1.4 occupies 5.0 L at 300 K and 100 kPa pressure and is heated at constant volume until its pressure has doubled. It's then compressed adiabatically until its volume is one-fourth its original value, then cooled at constant volume to 300 K , and finally allowed to expand isothermally to its original state. Find the net work done on the gas in Joules.
4. A quantity of an ideal gas initially at atmospheric pressure is maintained at a constant...
4. A quantity of an ideal gas initially at atmospheric pressure is maintained at a constant temperature while it is compressed to one-third of its volume. What is the final pressure of the gas? Pa
4. A quantity of an ideal gas initially at atmospheric pressure is maintained at a constant temperature while it is comp...
4. A quantity of an ideal gas initially at atmospheric pressure is maintained at a constant temperature while it is compressed to two-thirds of its volume. What is the final pressure of the gas?
A piston-cylinder assembly initially contains 0.8 kg of air at 100 kPa and 300 K. It...
A piston-cylinder assembly initially contains 0.8 kg of air at 100 kPa and 300 K. It is then compressed in a polytropic process PV3 = C to half the original volume. Assuming the ideal gas model for air and specific heat ratio is constant, k=1.4, determine (a) the final temperature, (b) work and heat transfer, each in kJ. R= 0.287 kJ/kg K. W, 82
3.32. One mole of an ideal gas, initially at 30°C and 1 bar, is changed to 130°C and 10 bar by three different mechanic...
3.32. One mole of an ideal gas, initially at 30°C and 1 bar, is changed to 130°C and 10 bar by three different mechanically reversible processes: The gas is first heated at constant volume until its temperature is 130°C; then it is compressed isothermally until its pressure is 10 bar The gas is first heated at constant pressure until its temperature is 130°C; then it is compressed isothermally to 10 bar The gas is first compressed isothermally to 10 bar;...
Air that initially occupies 0.21 m3 at a gauge pressure of 120 kPa is expanded isothermally...
Air that initially occupies 0.21 m3 at a gauge pressure of 120 kPa is expanded isothermally to a pressure of 101.3 kPa and then cooled at constant pressure until it reaches its initial volume. Compute the work done by the air. (Gauge pressure is the difference between the actual pressure and atmospheric pressure.)
Air that initially occupies 0.144 m3 at a gauge pressure of 211.0 kPa is expanded isothermally...
Air that initially occupies 0.144 m3 at a gauge pressure of 211.0 kPa is expanded isothermally to a pressure of 101.3 kPa and then cooled at constant pressure until it reaches its initial volume. Compute the work done by the air. (Gauge pressure is the difference between the actual pressure and atmospheric pressure.)
A sample of a monatomic ideal gas occupies 5.00 L at atmospheric pressure and 300 K...
A sample of a monatomic ideal gas occupies 5.00 L at atmospheric
pressure and 300 K (point A in the figure below). It is
warmed at constant volume to 3.00 atm (point B). Then it
is allowed to expand isothermally to 1.00 atm (point C)
and at last compressed isobarically to its original state.
a. Find Q, W, and ΔEint
for each of the processes.
Q (kJ)
W (kJ)
Eint (kJ)
A → B
B → C
C → A...
mass is 75kg A diatomic gas is initially at 280 K when its volume is equal...
mass is 75kg
A diatomic gas is initially at 280 K when its volume is equal to your volume and its pressure is 100,000 Pa. It is compressed isothermally to a volume of 1.00x103 m2 and then allowed to expand isobarically for a while before expanding adiabatically back to its original state. What is your volume? What are the pressure, volume, and temperature at the end of the isothermal process? 3. 4. (Hint: your density is approximately 1 000 kg/m2.)...
3 kg of nitrogen gas initially at a temp: 295K and a pressure of 100 kPa...
3 kg of nitrogen gas initially at a temp: 295K and a pressure of 100 kPa is compressed to a higher pressure. the internal energy change during this process is 70 kJ/kg. Determine the final temperature of the nitrogen. perform two iterations with average specific heats. Please use ideal gas law PV=nRT if possible ** Please answer both questions for quick thumbs up and comment!!! 1) 2) Find the final temp of the gas Perform two iterations using average specifc...
4. A quantity of an ideal gas initially at atmospheric pressure is maintained at a constant temperature while it is compressed to one-third of its volume. What is the final pressure of the gas? Pa
A piston-cylinder assembly initially contains 0.8 kg of air at 100 kPa and 300 K. It is then compressed in a polytropic process PV3 = C to half the original volume. Assuming the ideal gas model for air and specific heat ratio is constant, k=1.4, determine (a) the final temperature, (b) work and heat transfer, each in kJ. R= 0.287 kJ/kg K. W, 82
3.32. One mole of an ideal gas, initially at 30°C and 1 bar, is changed to 130°C and 10 bar by three different mechanically reversible processes: The gas is first heated at constant volume until its temperature is 130°C; then it is compressed isothermally until its pressure is 10 bar The gas is first heated at constant pressure until its temperature is 130°C; then it is compressed isothermally to 10 bar The gas is first compressed isothermally to 10 bar;...
A sample of a monatomic ideal gas occupies 5.00 L at atmospheric
pressure and 300 K (point A in the figure below). It is
warmed at constant volume to 3.00 atm (point B). Then it
is allowed to expand isothermally to 1.00 atm (point C)
and at last compressed isobarically to its original state.
a. Find Q, W, and ΔEint
for each of the processes.
Q (kJ)
W (kJ)
Eint (kJ)
A → B
B → C
C → A...
mass is 75kg
A diatomic gas is initially at 280 K when its volume is equal to your volume and its pressure is 100,000 Pa. It is compressed isothermally to a volume of 1.00x103 m2 and then allowed to expand isobarically for a while before expanding adiabatically back to its original state. What is your volume? What are the pressure, volume, and temperature at the end of the isothermal process? 3. 4. (Hint: your density is approximately 1 000 kg/m2.)...
3 kg of nitrogen gas initially at a temp: 295K and a pressure of 100 kPa is compressed to a higher pressure. the internal energy change during this process is 70 kJ/kg. Determine the final temperature of the nitrogen. perform two iterations with average specific heats. Please use ideal gas law PV=nRT if possible ** Please answer both questions for quick thumbs up and comment!!! 1) 2) Find the final temp of the gas Perform two iterations using average specifc...
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