A compound is found to contain 0.6480g carbon, 0.1362g hydrogen, and 0.2158g oxygen by weight. What is the empirical formula for this compound? The molecular weight for this compound is 74.14 g/mol. What is it's molecular formula?

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.