How does adding an iron bar to a solenoid affect the magnetic field of the electromagnet?
a. it changes the magnetic field to a current.
b. it changes the magnetic field’s direction.
c. it increases the magnetic field’s strength.
d. it decreases the magnetic field’s strength.

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

Tell me the iupac names of the following alcohols:

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.