Write a hypothesis about the use of an object's physical characteristics to determine its density. Use the format "if then... because ..." and be sure to answer the lesson question "How can the density of an object be determined?"

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.

Air can be considered a mixture. which statement does not explain why?

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these