a. He is as wise as his sister. (change into Negative) 6. He put the cup on the shelf. (change into interrogative) c. He said to her. Will you play tomorrow? (change into indirect) d. Doctors cure patients. (Change into passive) e. She (not eat) vet. (Rewrite it using correct tense) t Everybody has eaten? (use correct question tag)

Correct relationship between molecular formula and empirical 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.

Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2