1)Fe+ Cl2 → FeCl,
How to balance this
2)Fe+ O2 →Fe2O3
How to balance this

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

What are the first three quantum numbers for the electrons located in subshell 2s?