The amount of this element in a substance can be determined with the Dumas and Kjeldahl methods.
The amount of this element in a substance can be determined with the Dumas and Kjeldahl methods. A process that combines this element with hydrogen typically uses a porous iron catalyst prepared by reducing magnetite. Four atoms of this element are bonded to the iron in a heme group, and it is bonded with two hydrogen atoms in an (*) amine group. Legumes engage in a symbiotic relationship with Rhyzobium bacteria because of their ability to "fix" this element into a more usable form. Its triply-bonded diatomic molecule is the most common in Earth's atmosphere. For ten points, identify this element found in fertilizers and ammonia, with symbol N.
The amount of this element in a substance can be determined with the Dumas and Kjeldahl methods.
{nitrogen}