Which of the following operations usually makes a substance dissolve faster in a solvent (select ALL that apply)?
A. raising the temperature
B. lowering the temperature
C. agitation
D. crushing the substance to a powder

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

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.

How many grams of phosphorus are contained in 5.09 moles of phosphorus?