Which of the following would not cause an increase in the pressure of a gaseous system in a container? A The container is made larger. Additional gas is added to the container. B A C The temperature in the container is increased. The volume of the container is decreased.​

)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.

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %