50 points--

in each test, iron(ii) sulfate and iron(iii) nitrate were combined with the same substance or substances. however, the sulfate and nitrate parts of the compounds didn’t participate in any of the chemical reactions; only the iron ions reacted. comparing the results for each pair of tests, what can you conclude about the iron(ii) and iron(iii) ions?

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?

Reaction rate depends on how many molecules are coming into contact with each other with enough energy to react. increasing the temperature of the reactants will increase -

The minerals found in bones are deposited by living cells called