10. What changes during a chemical reaction between two compounds? A. number of atoms
B. chemical bonds
C. total mass
D. total energy

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?

What substance acts to prevent sudden ph changes in bodily fluids?