Homework Answers
Consider 0.7 kg of N2 at 300 K, 1 bar contained in a rigid tank connected by a valve to another r...
Consider 0.7 kg of N2 at 300 K, 1 bar contained in a
rigid tank connected by a valve to another rigid tank holding 0.3
kg of CO2 at 300 K, 1 bar. The valve is opened and gases
are allowed to mix, achieving an equilibrium state at 280 K.
Determine:
(a) the volume of each tank, in m3.
(b) the final pressure, in bar.
(c) the magnitude of the heat transfer to or from the gases during
the process,...
A rigid tank that contains 2.4 kg of N2 at 25°C and 550 kPa is connected...
A rigid tank that contains 2.4 kg of N2 at 25°C and 550 kPa is connected to another rigid tank that contains 4.4 kg of O2 at 25°C and 150 kPa. The valve connecting the two tanks is opened, and the two gases are allowed to mix. If the final mixture temperature is 25°C, determine the volume of each tank and the final mixture pressure. The gas constants of N2 and O2 are 0.2968 and 0.2598 kPa.m3/kg.K, respectively. The universal...
Consider 0.8 kg of N2 at 300 K, 1 bar contained in a rigid tank connected by a valve to another r...
Consider 0.8 kg of N2 at 300 K, 1 bar contained in a rigid tank connected by a valve to another rigid tank holding 0.3 kg of CO2 at 300 K, 1 bar. The valve is opened and gases are allowed to mix, achieving an equilibrium state at 280 K. Determine: (a) the volume of each tank, in m3. (Correct .7124 m^3 and .17 m^3) (b) the final pressure, in bar. (Correct 0.9331 bar) (c) the magnitude of the heat...
2. You have a 2 m' tank of gas A with density 1 kg/m and a...
2. You have a 2 m' tank of gas A with density 1 kg/m and a 2 m'tank of gas B with density 3 kg/m'. The tanks are at the same pressure. You join the tanks to make a 4 m tank, and let the gases mix. a. What are the specific volumes of gas A and B initially? b. What is the specific volume of the mixed gas? c. What is the density of the mixed gas? Hint: Think...
1. A rigid (constant volume) tank sealed by a valve initially contains 100 kg of air...
1. A rigid (constant volume) tank sealed by a valve initially contains 100 kg of air at a pressure of 100 kPa and 300 K. At time t = 0, the valve for the air tank is opened in a controlled manner and air leaks out isothermally (constant temperature) of the tank at a constant mass flow rate of 1 kg/s. The valve is closed after 75 seconds. Answer the following questions: Assuming air is an ideal gas, what is...
1.Argon contained in a closed, rigid tank, initially at 62.3°C, 3.9 bar, and a volume of...
1.Argon contained in a closed, rigid tank, initially at 62.3°C, 3.9 bar, and a volume of 4.2 m3, is heated to a final pressure of 9.4 bar. Assuming the ideal gas model with k = 1.6 for the argon, determine the heat transfer, in kJ. 2.Water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 223°C from a pressure of 5.4 bar to a pressure of 1.9 bar. Evaluate the work, in kJ/kg. 3.A mass of 4 kilograms...
3. Similar to 13-42 A rigid tank that contains 1.57 kg of N2 at 25°C and...
3. Similar to 13-42 A rigid tank that contains 1.57 kg of N2 at 25°C and 550 kPa is connected to another rigid tank that contains 3.71 kg of O2 at 25°C and 170 kPa. The valve connecting the two tanks is opened, and the two gases are allowed to mix. If the final mixture temperature is 25°C, determine the volume of each tank and the final mixture pressure
Two rigid tanks are connected by a valve.The left tank with a volume of 1.8m3 contains...
Two rigid tanks are connected by a valve.The left tank with a volume of 1.8m3 contains air at 28.1 C and 575 kPa while the right tank contains 4.2 kg of air at 33.3C and 410 kPa. Now the valve is opened and the air is allowed to mix until the system reaches thermal equilibrium with the surroundings at 13.8C. Determine the volume of the right tank and the final air pressure.
Two rigid tanks are connected by a valve. Initially, one tank contains 10 mº of helium...
Two rigid tanks are connected by a valve. Initially, one tank contains 10 mº of helium (He) gas at 220 kPa, 40°C? The other tank initially contains 4.0 R of neon (Ne) gas at 150 kPa, sot. Now the valve is opened, allowing the two gases to mix with each other. Heat transfer occurs during the mixing process. The final equilibrium temperature is 44'C. The specific heats of monatomic gases are independent of temperature. Determine: (a) the final volume of...
An initially empty, well insulated, rigid tank with a volume of 2 m3 is fitted with...
An initially empty, well insulated, rigid tank with a volume of 2 m3 is fitted with a mixing device. The tank has two inlets and zero outlets. One inlet is water at 1 MPa and 600◦C while the other is saturated liquid water. Both enter the tank slowly. If the amount of work done by the mixing device is 300 kJ, what must the temperature of the saturated liquid water be if the same mass is added through both inlets...
Consider 0.7 kg of N2 at 300 K, 1 bar contained in a
rigid tank connected by a valve to another rigid tank holding 0.3
kg of CO2 at 300 K, 1 bar. The valve is opened and gases
are allowed to mix, achieving an equilibrium state at 280 K.
Determine:
(a) the volume of each tank, in m3.
(b) the final pressure, in bar.
(c) the magnitude of the heat transfer to or from the gases during
the process,...
A rigid tank that contains 2.4 kg of N2 at 25°C and 550 kPa is connected to another rigid tank that contains 4.4 kg of O2 at 25°C and 150 kPa. The valve connecting the two tanks is opened, and the two gases are allowed to mix. If the final mixture temperature is 25°C, determine the volume of each tank and the final mixture pressure. The gas constants of N2 and O2 are 0.2968 and 0.2598 kPa.m3/kg.K, respectively. The universal...
2. You have a 2 m' tank of gas A with density 1 kg/m and a 2 m'tank of gas B with density 3 kg/m'. The tanks are at the same pressure. You join the tanks to make a 4 m tank, and let the gases mix. a. What are the specific volumes of gas A and B initially? b. What is the specific volume of the mixed gas? c. What is the density of the mixed gas? Hint: Think...
1. A rigid (constant volume) tank sealed by a valve initially contains 100 kg of air at a pressure of 100 kPa and 300 K. At time t = 0, the valve for the air tank is opened in a controlled manner and air leaks out isothermally (constant temperature) of the tank at a constant mass flow rate of 1 kg/s. The valve is closed after 75 seconds. Answer the following questions: Assuming air is an ideal gas, what is...
3. Similar to 13-42 A rigid tank that contains 1.57 kg of N2 at 25°C and 550 kPa is connected to another rigid tank that contains 3.71 kg of O2 at 25°C and 170 kPa. The valve connecting the two tanks is opened, and the two gases are allowed to mix. If the final mixture temperature is 25°C, determine the volume of each tank and the final mixture pressure
Two rigid tanks are connected by a valve. Initially, one tank contains 10 mº of helium (He) gas at 220 kPa, 40°C? The other tank initially contains 4.0 R of neon (Ne) gas at 150 kPa, sot. Now the valve is opened, allowing the two gases to mix with each other. Heat transfer occurs during the mixing process. The final equilibrium temperature is 44'C. The specific heats of monatomic gases are independent of temperature. Determine: (a) the final volume of...
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