At a pressure of 150 kPa, a sample of gas has a volume of 60 liters. What is the pressure if the volume is increased to 75 liters? (Round to 3 significant figures)

If 200.0g of copper(ll) sulfate react with an excess of zinc metal, what is the theoretical yield of copper

What material does not melt at any temperature

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.