Which of the following is an example of a phase change from liquid to solid

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.