2. SOFAR Channel

a. How many   immiscible liquid phases   are there in this system at the bubble point?

b. Please determine the mole fraction of B in vapor phase at the bubble point.Note: A, B, and C may or may not be miscible in liquid phase. You can assume Raoult's Law applies for any homogeneous liquid mixture that may exist in this system. Your answer should be based on the calculation. A random guess will get no credit.

12. A rigid box of a volume of 1 m3 contains 1 mole of nitrogen at T = 300 K. The box is connected to ahigh-pressure nitrogen gas line at P = 200 kPa and T = 280 K via a valve. The valve is opened and one mole of nitrogen flows into the box. The valve is then closed. The process mentioned above occurs in a very short time, and the temperature of the box increases during this process.Then heat exchange occurs between the box and the surroundings (which are also at 300 K), and thetemperature of the box returns to 300 K.   Please calculate how much heat is exchanged between the box and the surroundings.  Note: You can assume nitrogen behaves like an ideal gas with Cp of 29 J/(mole K) under all conditions.

1. dB &db

3. CTD &XBT

4. geostrophic current

5. Ekman spiral

6. Gvre

7. continental slope

8. upwelling & downwelling