A mixture contains these parts: Sand, Sawdust, Iron pieces, Salt, and Glass marbles. Below are six steps in a process that can separate all the parts of this mixture. Put the steps in the correct order. Write '1' in front of the first step, '2' in front of the second step, and so forth. Also, write the part that will be separated as a result of each step. A few of the steps can happen at different times.

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.