How many copper atoms are in a pure copper statue with a mass of 142kg

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?

Explain why scientists use shared characteristics to make cladograms.

How many grams of n2h4 will be consumed by 23 g of n2o4