14. Which of the following concentration units are temperature dependent?a.Molalityb.Mass percentc.Mole fractiond.Molaritye.None of the above15. What mass (in g) of NH3must be dissolved in 475 g of methanol to make a 0.250 m solution?16. Determine the molality of a solution prepared by dissolving 0.500 moles of CaF2in 11.5 moles of H2O17. commercial grade HCl solutions are typically 39% (by mass) HCl in water. Determine the molarity of the HCl, if the solution has a density of 1.20 g/mL18. Commercial grade HCl solutions are typically 39% (by mass) HCl in water. Determine the molality of the HCl, if the solution has a density of 1.20 g/mLa.17.5 mb.39.0 mc.6.39 m
d.9.44 me.10.7 m19. Calculate the mole fraction of MgCl2in an aqueous solution prepared by dissolving 0.400moles of MgCl2in 850.0 g of water20. Determine the freezing point depression of a solution that contains 30.7 g glycerin(C3H8O3, molar mass = 92.09 g/mol) in 376 mL of water. Some possibly useful constants for water are Kf- 1.86 °C/m and Kb= 0.512 °C/m21. Place the following aqueous solutions of nonvolatile, nonionic compounds in order of decreasingosmotic pressureI. 0.011 M sucroseII. 0.00095 M glucoseIII. 0.0060 M glycrerin
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