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7. (15 pts) Liquid nitrogen boils at 77 K at 1 atm. A common demonstration of...
Question 5 1 pts Liquid nitrogen is needed in a number of medical applications, such as...
Question 5 1 pts Liquid nitrogen is needed in a number of medical applications, such as removing tumors during cryosurgery. Gaseous N2 at room temperature (298K) is cooled to liquid N2 just below its boiling point. N2 liquefies at 77K. The specific enthalpy to cool N2 from 298K to 77K is -1435 cal/mol. The heat of vaporization (i.e., the specific enthalpy change from the liquid to the vapor form) of nitrogen is 1336 cal/mol. The overall change in its specific...
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pre...
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies, since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3...
The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitroge...
The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3 at 1 atm....
Question 5 1 pts Liquid nitrogen is needed in a number of medical applications, such as removing tumors during cryosurgery. Gaseous N2 at room temperature (298K) is cooled to liquid N2 just below its boiling point. N2 liquefies at 77K. The specific enthalpy to cool N2 from 298K to 77K is -1435 cal/mol. The heat of vaporization (i.e., the specific enthalpy change from the liquid to the vapor form) of nitrogen is 1336 cal/mol. The overall change in its specific...
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies, since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3...
The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3 at 1 atm....
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