1-Calculate the molality of a 5.86 M ethanol (C2H5OH) aqueous solution whose density is 0.927 g/mol. (EXAMPLE 13.3).
2. Calculate the molality of a 44.6 percent (by mass) aqueous solution of sodium chloride. (EXAMPLE 13.4).
3. Calculate the molar concentration of oxygen in water at 25°C for a partial pressure of 0.22 atm. The Henry's law constant for oxygen is 1.3 3 1023 mol/L ? atm. (EXAMPLE 13.5).
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