A paper chromatography Is made of a particular mixture . The coloured bands that result from the chromatography Run are so close to each other that they overlap Making the chromatogram Difficult to interpret what change or changes could be made to increase the separation between the colours? Explain

How far is the region from the equator or control climate

)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.

Which material burns faster? metal aluminum