The reaction of 100 g of salicylic acid, c7H6O3 with an excess acetic anhydride produces 50g of aspirin (actual yield.) C9H8O4 according to the equations what is the percentage yield? c7H6O3 + C4H6O3 ——> C9H8O4 + C4H4O2

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.