6. Why does an atom have no net electric charge? A. Its subatomic particles carry no electric charges.
B. The positively charged protons cancel out the
negatively charged neutrons.
C. The positively charged neutrons cancel out the
negatively charged electrons.
D. The positively charged protons cancel out the
negatively charged electrons.

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

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.