What mass of na2so4 must be dissolved in 104 grams of water to lower the freezing point by 2.50 °c? the freezing point depression constant, kfp, of water is –1.86 °c/m. assume the van't hoff factor for na2so4 is 2.88.

What must happen before a body cell can begin mitotic cell division

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

)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.