Which word equation best describes the following formula equation: 4Al+3O2→2Al2O3?

A. Four molecules of aluminum and three molecules of diatomic oxygen react to form two molecules of aluminum oxide.
B. Aluminum reacts with oxide to form aluminum oxide.
C. Four molecules of aluminum react with six molecules of oxide to form twelve molecules of aluminum oxide.
D. Two molecules of aluminum oxide reacts to form three molecules of oxygen and four molecules of aluminum.

50 pts plz what is the physical state of matter of baking soda.

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.

Why is the melting of ice a physical change ?