What is the relationship between enthalpies p, q, r and s?
S(s) + H2(g) -> H2S(g) AH=p
H2(g) + O2(g) -> H20(1) AH=q
S(s) + O2(g) -> SO2(g) AH=r
H2S(g) + 1%202(g) -> H2O(1) + SO2(g) AH=s

Calculate the molarity of the solution. 6.02 x 1022 molecules of hci (molecular weight = 36.5 g/mole) in 2.0 liters of water m

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?

Which substance can be broken down by chemical means