1. The Henry constants for oxygen and nitrogen in water at 0°C are 2.54×104 and 5.45×104 atm, respectively. Calculate the decrease in the freezing point of water caused by the dissolution of air (φ (N2) = 80%; φ (O2) = 20%) at 1 atm. The cryoscopic constant of water is 1.86 K·kg/mol

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