The temperature of 5.00 moles of Nitrogen gas at atmospheric pressure is decreased from 800.K to...
The temperature of 5.00 moles of Nitrogen gas at atmospheric pressure is decreased from 800.K to 250.K. During this time the volume is decreased to one-third of the original volume. Find the following:
- Work performed during this process.
- Amount of heat transferred during this process.
- Change in internal energy of the nitrogen gas during this process.
- Did the gas gain or lose energy during this process, and how do you determine this?
- Find the change in entropy when 214 g of steam is turned into water at 82.0° C.
Homework Answers
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The temperature of 5.00 moles of Nitrogen gas at atmospheric
pressure is decreased from 800.K to...
7. A 0.2 moles of diatomic gas are contained in a cylinder at 300 K and atmospheric pressure 1*10...
7. A 0.2 moles of diatomic gas are contained in a cylinder at 300 K and atmospheric pressure 1*10^5 Pa. The gas receives 1000 J of heat in an ideal adiabatic transformation. Calculate the change of internal energy, the work done on the gas and the final volume and temperature of the gas.
A cylinder contains 9.8 moles of ideal gas, initially at a temperature of 119°C. The cylinder is provided with a frictio...
A cylinder contains 9.8 moles of ideal gas, initially at a temperature of 119°C. The cylinder is provided with a frictionless piston, which maintains a constant pressure of 7.4 × 105 Pa on the gas. The gas is cooled until its temperature has decreased to 27°C. For the gas CV = 14.41 J/mol ∙ K, and the ideal gas constant R = 8.314 J/mol · K. (a) Find the work done by (or on) the gas during this process. Is...
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 the number of moles in the sample.
moles
(b) Find the temperature at point B.
K
(c) Find the temperature at point C.
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A piston-cylinder device contains 0.78 kg of nitrogen gas at 140 kPa and 37°C. The gas...
A piston-cylinder device contains 0.78 kg of nitrogen gas at 140 kPa and 37°C. The gas is now compressed slowly in a polytropic process during which PV1.3 = constant. The process ends when the volume is reduced by one-half. Determine the entropy change of nitrogen during this process. The gas constant of nitrogen is R= 0.2968 kJ/kg-K. The constant volume specific heat of nitrogen at room temperature is Cr=0.743 kJ/kg-K. (Round the final answer to five decimal places.) The entropy...
A piston-cylinder device contains 0.63 kg of nitrogen gas at 140 kPa and 37°C. The gas...
A piston-cylinder device contains 0.63 kg of nitrogen gas at 140 kPa and 37°C. The gas is now compressed slowly in a polytropic process during which PV1.3. constant. The process ends when the volume is reduced by one-halt. Determine the entropy change of nitrogen during this process. The gas constant of nitrogen is R-0.2968 kJ/kg K. The constant volume specific heat of nitrogen at room temperature is C -0.743 kJ/kg K. (Round the final answer to five decimal places.) The...
5.00 moles of an ideal gas are contained in a cylinder with a constant external pressure...
5.00 moles of an ideal gas are contained in a cylinder with a constant external pressure of 1.00 atm and at a temperature of 523 K by a movable, frictionless piston. This system is cooled to 423 K. A) calculate work done on or by the system, w (J) B. Given that the molar heat capacity for an ideal gas is 20.8 J/mol K, calculate q (J) C. Calculate the change in internal energy for this ideal system,in J
18. An ideal gas is compressed from a volume of V 5.00 L to a Volume...
18. An ideal gas is compressed from a volume of V 5.00 L to a Volume of V,- 3.00 L while in thermal contact with a heat reservoir of T 295 K. During the compression process the piston moves down a distance of d = 0.130 m under the action of an average external force of F = 25.0 KN. Find (a) the work done on the gas, (b) the change in internal energy of the gas, (c) the thermal...
A sealed container holds 0.020 moles of ideal nitrogen (N2) gas at a pressure of 1.5...
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Two moles of an ideal gas initially has a temperature of 400 K and a volume...
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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 the number of moles in the sample.
moles
(b) Find the temperature at point B.
K
(c) Find the temperature at point C.
K...
8. (4 pts) A volume of gas receives 1000 J of heat energy and then expands against the atmospheric tpressure, doing 500 J of work. What is the change in internal energy (U) of the gas? 19. (5 pts) A steam turbine receives steam at 1300 K and releases heat to the Ohio River at 300 K. What is the maximum theoretical efficiency of this heat engine? 20. Heat is transferred from a lake at 300K to melt an ice...
A piston-cylinder device contains 0.78 kg of nitrogen gas at 140 kPa and 37°C. The gas is now compressed slowly in a polytropic process during which PV1.3 = constant. The process ends when the volume is reduced by one-half. Determine the entropy change of nitrogen during this process. The gas constant of nitrogen is R= 0.2968 kJ/kg-K. The constant volume specific heat of nitrogen at room temperature is Cr=0.743 kJ/kg-K. (Round the final answer to five decimal places.) The entropy...
A piston-cylinder device contains 0.63 kg of nitrogen gas at 140 kPa and 37°C. The gas is now compressed slowly in a polytropic process during which PV1.3. constant. The process ends when the volume is reduced by one-halt. Determine the entropy change of nitrogen during this process. The gas constant of nitrogen is R-0.2968 kJ/kg K. The constant volume specific heat of nitrogen at room temperature is C -0.743 kJ/kg K. (Round the final answer to five decimal places.) The...
18. An ideal gas is compressed from a volume of V 5.00 L to a Volume of V,- 3.00 L while in thermal contact with a heat reservoir of T 295 K. During the compression process the piston moves down a distance of d = 0.130 m under the action of an average external force of F = 25.0 KN. Find (a) the work done on the gas, (b) the change in internal energy of the gas, (c) the thermal...
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