Posted by james on Thursday, December 3, 2009 at 11:09pm.
Your sea density is incorrect. It is 1.025*10^3 kg/m^3
First calculate the pressure at 25 m depth, making sure that you add atmospheric pressure Po to (density)*g*(depth).
P(25 m) = 1.01*10^5 + (1.025*10^3)(9.81)*25.0 = 1.01*10^5 + 2.51*10^5 = 3.52*10^5
Prssure at 25 m depth is about 3.5 times larger than at the surface.
The ratio of bubble volume at the surface to the volume at 25 m is
[T(surface)/T(25m)]*[P(25m)/P(surface)]
=(293/278)*(3.5)
Check my numbers.
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