How many moles are equal to 1.27 x
10^23 molecules of H2O?

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?

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

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