Calculate the enthalpy change for the reaction Fe2O3(s) + CO(g) 2FeO(s) + CO2(g) from the following: Fe2O3 (s) + 3CO(g) 2Fe(s) + 3CO2(g) H = _ 23.4kJ , FeO(s) + CO(g) Fe(s) + CO2(g) H = _ 10.9kJ.

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons