Which colorless and odorless gas, produced by radioactive decay of uranium-238, is considered to be a cancer-causing agent?
a. hydrogen
b. radon
c. oxygen
d. boron

When would a bouncy ball have the most potential energy

Chemistry worksheet - i am not sure what they are asking for exactly?

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.