Which compound can act as both a brønsted-lowry acid and a brønsted-lowry base?
a. water
b. oxygen
c. sodium hydroxide
d. hydrochloric acid

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?

What forms when chemical reactions combine pollution with sunlight?

Name the element in group 17, period 2. (periodic table)