Suggest two reasons why copper should not be disposed of in landfill sites

What is avogadro’s number, and why is it useful

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring

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.