CONFIDENTIAL QUESTION 2 (20 MARKS) A carbon steel rigid tank initially contains a 2.5 kg of...

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CONFIDENTIAL QUESTION 2 (20 MARKS) A carbon steel rigid tank initially contains a 2.5 kg of three-components gas mixture, particularly 57 kPa nitric oxide (NO), 63 kPa nitrous oxide (N₂O), and 78 kPa nitrogen dioxide (NO2) at 127°C. The rigid tank exhibits a rotating shaft attached on it, which exerting a power of 2 kW on gas mixture to agitate it. Since the rigid tank is situated in an air-conditioned room, the rigid tank is losing heat at a rate of 0.5 kW. Subsequently, the gas mixture is then heated for a period of 60 s by a gas torch flame gun to 197°C. It is assumed that the pressure of rigid tank almost remains unchanged after the heating process. Given the respective molar mass of NO, N₂O, and NO₂ is 30.01 g/mol, 44.01 g/mol, and 46.01 g/mol. Take R, as 8.314 kJ/kmol-K. Q MAX erting a power of 2 kV to agitate it. Since the rigid tank is situated in an air-conditioned room, the rigic tank is losing heat at a rate of 0.5 kW. Subsequently, the gas mixture is then heated for a period of 60 s by a gas torch flame gun to 197°C. It is assumed that the pressure of rigid tank almost remains unchanged after the heating process. Given the respective molar mass of NO, N₂O, and NO2 is 30.01 g/mol, 44.01 g/mol, and 46.01 g/mol. Take R,, as 8.314 kJ/kmol-K. Q Wsh L (a) Determine the total pressure of the system, the mole fraction of each gas species, and the molar mass of the gas mixture. (5 Marks) of the system, the mole fraction of each gas species, and the molar mass of the gas mixture. (5 Marks) (b) Calculate the change of specific internal energy and internal energy of the gas mixture. (10 Marks) TABLE A-2 Ideal-gas specific heats of various common gases (Concluded) (c) As a function of temperature 2-=a+bT+<T+dT' (7 in K., in kJ/kmol-K) Substance Formula NO Nitric oxide Nitrous oxide N.O 0.09395 x 107 5.8632 x 10-² 5.715 x 10-² 0.9747 x 10-5 -3.562 x 10-5 -3.52 x 10-5 NO. Nitrogen dioxide 22.0 (c) Determine the heat input of the gas torch flame gun to the gas mixture. d -4.187 x 10-9 10.58 x 10-9 7.87 x 10-9 (5 Marks) CONFIDENTIAL QUESTION 2 (20 MARKS) A carbon steel rigid tank initially contains a 2.5 kg of three-components gas mixture, particularly 57 kPa nitric oxide (NO), 63 kPa nitrous oxide (N₂O), and 78 kPa nitrogen dioxide (NO2) at 127°C. The rigid tank exhibits a rotating shaft attached on it, which exerting a power of 2 kW on gas mixture to agitate it. Since the rigid tank is situated in an air-conditioned room, the rigid tank is losing heat at a rate of 0.5 kW. Subsequently, the gas mixture is then heated for a period of 60 s by a gas torch flame gun to 197°C. It is assumed that the pressure of rigid tank almost remains unchanged after the heating process. Given the respective molar mass of NO, N₂O, and NO₂ is 30.01 g/mol, 44.01 g/mol, and 46.01 g/mol. Take R, as 8.314 kJ/kmol-K. Q MAX erting a power of 2 kV to agitate it. Since the rigid tank is situated in an air-conditioned room, the rigic tank is losing heat at a rate of 0.5 kW. Subsequently, the gas mixture is then heated for a period of 60 s by a gas torch flame gun to 197°C. It is assumed that the pressure of rigid tank almost remains unchanged after the heating process. Given the respective molar mass of NO, N₂O, and NO2 is 30.01 g/mol, 44.01 g/mol, and 46.01 g/mol. Take R,, as 8.314 kJ/kmol-K. Q Wsh L (a) Determine the total pressure of the system, the mole fraction of each gas species, and the molar mass of the gas mixture. (5 Marks) of the system, the mole fraction of each gas species, and the molar mass of the gas mixture. (5 Marks) (b) Calculate the change of specific internal energy and internal energy of the gas mixture. (10 Marks) TABLE A-2 Ideal-gas specific heats of various common gases (Concluded) (c) As a function of temperature 2-=a+bT+<T+dT' (7 in K., in kJ/kmol-K) Substance Formula NO Nitric oxide Nitrous oxide N.O 0.09395 x 107 5.8632 x 10-² 5.715 x 10-² 0.9747 x 10-5 -3.562 x 10-5 -3.52 x 10-5 NO. Nitrogen dioxide 22.0 (c) Determine the heat input of the gas torch flame gun to the gas mixture. d -4.187 x 10-9 10.58 x 10-9 7.87 x 10-9 (5 Marks)

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Solution Total mass m 25kg Kont PNO 57k Pa 10 Coriliar ordion 91 ori PNO ... View the full answer