A mixture of oxygen, carbon dioxide, and nitrogen has a total pressure of 0.830 atm. What is the partial pressure of nitrogen in kPa, if the partial pressure of carbon dioxide is 0.520 atm and the partial
pressure of oxygen is 0.110 atm? (1 atm = 101.3 kPa)
a. 20.3 atm
b. 0.200 kPa
c. 20.3 kPa
d. 0.200 atm

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.