An unknown sample is put in a large graduated cylinder. The water level in the graduated cylinder was 20.5 mL and the final level
was 38.3 mL. If the mass of the object was determined to be
88.4 g, what is the density of the metal?

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.