What is the oxidation number for N in the compound NH3? (Recall that H usually has an oxidation number of 1. ) –3 –1 0 3.

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

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?

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