According to the law of conservation of matter, which statement about chemical reactions is true?
a.
energy is created as atoms are destroyed in chemical reactions.
b.
atoms cannot be created or destroyed by chemical reactions.
c.
atoms are created by some reactions and destroyed by others.
d.
every atom destroyed in a chemical reaction must be replaced.

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

The arrangement of particles is most ordered in a sample of

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.