Density of seawater

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A very long pipe is capped at one end with a semipermeable membrane. How deep (in meters) must the pipe be immersed into the sea for fresh water to begin passing through the membrane? Assume the seawater to be at 20°C, and treat it as a 0.70 M NaCl solution. The density of seawater is 1.03 g/cm3. The answer to this question is 168 m, however, I do not know how to arrive to this answer. Please provide the steps to arrive to the answer.

Reference no: EM131430284

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