A10.0-ml sample of 1.0 m nahco3 is titrated with 1.0 m hcl (hydrochloric acid). approximate the titration curve by plotting the following points: ph after 0 ml hcl added, ph after 1.0 ml hcl added, ph after 9.5 ml hcl added, ph after 10.0 ml hcl added (equivalence point), ph after 10.5 ml hcl added, and ph after 12.0 ml hcl added.

Which statement is best described as a atom

)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.

How many moles are contained in 5.6 l of h2 at stp