Section: Thermodynamics | Marks: 2
In a closed rigid vessel, air is initially at a pressure of 0.3 MPa and volume of 0.1 m3 at 300 K. A stirrer supplies 100 kJ of work to the air, while 20 kJ of heat is lost to the atmosphere across the container walls. After these processes, the temperature of air changes to _________K.
- A. 321.9
- B. 702.4
- C. 782.4
- D. 620.2
Answer: D. 620.2