Which scientist proposed a modification to the theory of atomic number that esablished electron energy levels or shells

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?

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

Chemistry worksheet - i am not sure what they are asking for exactly?