Two monosaccharides bond together to form a disaccharide. Give the name of the functional group of the MONOSACCHARIDES that participate in this dehydration (linking) process. Hint! Look at the structure of the monosaccharides before it makes a disaccharide and determine which structure/group of atoms is involved to make a disaccharide.

)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.