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Problem- Sea water consists of an aqueous solution of the following cationic and anionic species: Na+ (0.479 M), Mg2+ (0.109 M), Ca2+ (0.021 M), K+ (0.010 M), Cl- (0.560 M), SO 2- 4 (0.057 M), and HCO - (0.0020 M). The ionic content of sea water is 3.50% by mass. The 3 temperature is T = 25.0°C.

(a) What is the osmotic pressure exerted by sea water on a semi-permeable membrane that separates the sea water from pure water?

(b) If the vapor pressure of pure water at room temperature is 0.0313 atm, then is the vapor pressure of sea water higher or lower than that of pure water? Quantify your answer by determining the difference between the two vapor pressures. One liter of water has a mass of one kilogram.

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