A circa WW2 German ship filled with gold bullion is discovered on the floor of t
ID: 835139 • Letter: A
Question
A circa WW2 German ship filled with gold bullion is discovered on the floor of the North Atlantic. Complicating recovery efforts is the depth of ocean which is determined to 470 meters. Deep sea divers must spend days (sometimes as long as a week) in pressure chambers before and after dives due the tremendous pressures at these depths.
a) What is the absolute pressure (in atm) at the wreck? (15)
b) At this pressure, oxygen becomes extremely concentrated and toxic. Using the generalized compressibility chart, determine the concentration of pure oxygen (in mol/liter) in the submerged pressure chamber (at a temperature of 25
Explanation / Answer
a) 1+ (470*9.8*1000)/101325 atm = 46.45 atm
b) molar volume at this pressure = 5.26*10^-4 m^3 = 0.060 gm/cc for pure )2 it is 1.308*10^-3 gm /cc
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