Multiple choice
during
a. the number of neutrons always decreases.
b. the number of neutrons always increases.
c. the number of protons always increases.
d. the number of protons always decreases.

Smog is the term used to describe the combination of fog and smoke

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.