A constant volume chamber of 0.3 capacity contains 2 kg of a gas (KJ/kg k, KJ/kg...
A constant volume chamber of 0.3 
capacity contains 2 kg of a gas (
KJ/kg
k, 
KJ/kg k) at 5 deree c. Heat is transferred to the gas until the
temperature is 100 degree c. Find the heat transferred, and the
changes in enthalpy and entropy.
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A constant volume chamber of 0.3
capacity contains 2 kg of a gas (KJ/kg
k,
KJ/kg...
An ideal gas has a gas constant R = 0.3 kJ / kg K and the...
An ideal gas has a gas constant R = 0.3 kJ / kg K and the specific heat at constant volume is Cv = 0.7 kJ / Kg K. If the gas has a temperature change of 100 ° C. Choose the correct answer by making the corresponding calculations or justifications for each of the following cases: The change in enthalpy in KJ / kg a) 30 b) 70 c) 100 d) Insufficient information The work done is in kJ...
thermodynamics please help asap An ideal gas with constant heat capacity (C 1 kJ/kg K, R-0.3...
thermodynamics please help asap
An ideal gas with constant heat capacity (C 1 kJ/kg K, R-0.3 kJ/kg K) is to be adiabatically compressed, heated, then expanded in the steady flow system shown below. The compressor and turbine are adiabatic and reversible and kinetic and potential energy effects are negligible. (a) Find the power (kW) required by the compressor. (b) Find the power (kW) delivered by the turbine. Q800 kJ/s P8 barsheat exchanger turbine compressor P- 1 bar Tjs280K P?s 1...
1)(Hint: Cp=1.005 kJ/kg-K, Cv=0.718 kJ/kg-K, R=0.287 kJ/kg-K). An air-tight room contains 80 kg of air, and...
1)(Hint: Cp=1.005 kJ/kg-K, Cv=0.718 kJ/kg-K, R=0.287 kJ/kg-K). An air-tight room contains 80 kg of air, and a 2-kW baseboard electric resistance heater in the room is turned on and kept on for 15 min. The temperature rise of air at the end of 15 min is 2)An example of when it is appropriate to model a substance as an ideal gas is when a. The pressure and temperature are close to the critcal point b. The pressure and temperature are...
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 cylinder contains 10 moles of an ideal gas at a temperature of 300 K. The...
a cylinder contains 10 moles of an ideal gas at a temperature of 300 K. The gas is compressed at constant pressure until the final volume equals 0.77 times the initial volume. The molar heat capacity at constant volume of the gas is 24.0 j/mol. What is the heat absorbed by the gas in kJ
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...
A piston-cylinder device contains 5 kg of saturated water liquid at 0.3 MPa. Heat is transferred...
A piston-cylinder device contains 5 kg of saturated water liquid at 0.3 MPa. Heat is transferred at constant pressure until the temperature reaches 500 -C. (84 marks) a) What is the initial temperature of the system? b) What is the initial quality x? c) What is the initial specific enthalpy of the system? d) What is the final state? e) Show the process on a P-v diagram with respect to the saturation line. 1) What is the final specific enthalpy?...
constant specife heats An ideal gas wit of cp .1 kJ/(kg K) and c 0.75 kJ/(kg...
constant specife heats An ideal gas wit of cp .1 kJ/(kg K) and c 0.75 kJ/(kg K) is contained in the piston-cylinder device shown. Initially, the vol- ume is 50 cm3 and the temperature is 20°C. How much heat must be added to double the volume if the final pressure and temperature are 400 kPa and 1000 K respectively. g·K) and Cu- Ideal gas Linear spring
A mixture of 0.3 kg of Carbon Dioxide and 1.7 kg of Nitrogen contains in a...
A mixture of 0.3 kg of Carbon Dioxide and 1.7 kg of Nitrogen contains in a piston - cylinder device is compresiod fom 100kPa 2/C to 300kPa i a Poly'topic process. The Polytropic constant n-1.3. Assume constant specific heats at average temperature, determine a) The mole fraction of each component in the gas [6 Marks] b) The final temperature after compression. mixture. [8 Marks] c) The specific heats, Cp and Cv of the mixture.(in kJ/kg.K) d) The gas constant of...
QUESTION 2 A piston-cylinder device contains 5 kg of saturated water liquid at 0.3 MPa. Heat...
QUESTION 2 A piston-cylinder device contains 5 kg of saturated water liquid at 0.3 MPa. Heat is transferred at constant pressure until the temperature reaches 500 °C. (84 marks) What is the initial temperature of the system? b) What is the initial quality x? c) What is the initial specific enthalpy of the system? d) What is the final state? e) Show the process on a P-v diagram with respect to the saturation line. 1) What is the final specific...
thermodynamics please help asap
An ideal gas with constant heat capacity (C 1 kJ/kg K, R-0.3 kJ/kg K) is to be adiabatically compressed, heated, then expanded in the steady flow system shown below. The compressor and turbine are adiabatic and reversible and kinetic and potential energy effects are negligible. (a) Find the power (kW) required by the compressor. (b) Find the power (kW) delivered by the turbine. Q800 kJ/s P8 barsheat exchanger turbine compressor P- 1 bar Tjs280K P?s 1...
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...
A piston-cylinder device contains 5 kg of saturated water liquid at 0.3 MPa. Heat is transferred at constant pressure until the temperature reaches 500 -C. (84 marks) a) What is the initial temperature of the system? b) What is the initial quality x? c) What is the initial specific enthalpy of the system? d) What is the final state? e) Show the process on a P-v diagram with respect to the saturation line. 1) What is the final specific enthalpy?...
constant specife heats An ideal gas wit of cp .1 kJ/(kg K) and c 0.75 kJ/(kg K) is contained in the piston-cylinder device shown. Initially, the vol- ume is 50 cm3 and the temperature is 20°C. How much heat must be added to double the volume if the final pressure and temperature are 400 kPa and 1000 K respectively. g·K) and Cu- Ideal gas Linear spring
A mixture of 0.3 kg of Carbon Dioxide and 1.7 kg of Nitrogen contains in a piston - cylinder device is compresiod fom 100kPa 2/C to 300kPa i a Poly'topic process. The Polytropic constant n-1.3. Assume constant specific heats at average temperature, determine a) The mole fraction of each component in the gas [6 Marks] b) The final temperature after compression. mixture. [8 Marks] c) The specific heats, Cp and Cv of the mixture.(in kJ/kg.K) d) The gas constant of...
QUESTION 2 A piston-cylinder device contains 5 kg of saturated water liquid at 0.3 MPa. Heat is transferred at constant pressure until the temperature reaches 500 °C. (84 marks) What is the initial temperature of the system? b) What is the initial quality x? c) What is the initial specific enthalpy of the system? d) What is the final state? e) Show the process on a P-v diagram with respect to the saturation line. 1) What is the final specific...
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