Imagine a chemist is in the lab and trying to make some chemical reactions happen.
In one reaction she reacts chemicals in an exothermic reaction and there is an
increase in entropy. A second chemical reaction she is trying to run is endothermic
and there is a decrease in entropy. Which of the two reactions is more likely to occur
and why?

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.

Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.

Which statement describes the formation of our sun? a disk formed of long trails of stars coiled into a spiral. it formed an elliptical flattened disk. heat and gases contracted within a nebula. gravity pushed stars away from a center core.