Race Omaha is a non-profit 501c3 organization whose mission is to provide opportunities for all ages and abilities to participate in events that promote active and healthy lifestyles. All of our events are sanctioned by the USA Triathlon. The USAT is the sanctioning authority for more than 4,300 events across the nation.
In chemistry, metathesis is used to describe reactions that interchange atoms or groups of atoms between molecules. When at least one atom undergoes a change in oxidation state, the reaction is an oxidation-reduction reaction.
Redox Reactions. 1  For atoms in their elemental form, the oxidation number is 0. 2  For ions, the oxidation number is equal to their charge. 3  For single hydrogen, the number is usually +1 but in some cases it is -1. 4  For oxygen, the number is usually -2.