Analysisusing the combined mass of the solids you recovered, calculate the percent recovery (see appendix ii) from the separation, based on the total mass of the original amount you weighed. identify each compound on the tlc plate and calculate the rf for each spot on your tlc plate. which spot (lower or higher) is benzophenone? which is benzoic acid? rf benzoic acid:

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.

Which of these is an intensive property of a substance