What do the sections between the lines on a phase diagram represent?
a. the regions in which temperature and pressure change a
substance's phase
b. the conditions in which a substance exists in a certain phase
c. the areas in which the kinetic energy of a substance is constant
d. the ranges where temperature and pressure are constant in a
substance

Word equation for k+ h2o yield koh + h2

All forces cause motion? true or false

)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.