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In the Challenger Deep of the Marianas Trench, the depth of seawater is 10.9 km and the pressure is 1.16 × 108 Pa (about 1150 atmospheres). (a) If a cubic meter of water is taken to this depth from the surface (where the normal atmospheric pressure is about 1.0 × 105 Pa), what is the change in its volume? Assume that the bulk modulus for seawater is the same as for freshwater (2.2 × 109 Pa). (b) At the surface, seawater has a density of 1.03 × 103 kg/m3. What is the density of seawater at the depth of the Challenger Deep?
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