They react to form ammonia
When hydrogen is combined with nitrogen in the presence of a catalyst at high temperatures and pressures, it forms ammonia through a process called Haber process. Ammonia is an important precursor for the production of fertilizers and various chemical compounds.
BOOM.
We would need to know the situation to be able to answer this question.
Nothing.
YES, this happens when hydrogen burns. 2H2 + O2 ==> 2H2O
Heating NaOH and NaAlO2 in the presence of N2 can lead to the formation of sodium alanate (Na3AlH6), which is a complex hydride used in hydrogen storage applications. This reaction involves the reduction of sodium aluminate by sodium hydroxide in the presence of nitrogen gas.
The nitrogen and hydrogen that don't react are recycled and put through the process again.
When hydrogen iodide breaks down, it forms hydrogen gas and iodine vapor. The reaction is reversible, meaning that hydrogen iodide can reform if hydrogen gas and iodine are combined.
When a hydrogen atom bonds with one oxygen or nitrogen atom and is attracted to another oxygen or nitrogen atom, it can form a hydrogen bond. Hydrogen bonds are weak electrostatic attractions between a δ+ hydrogen atom and a lone pair of electrons on a δ- oxygen or nitrogen atom in another molecule. These bonds can play important roles in stabilizing the structure of molecules such as water or proteins.
Formation of: - iron nitride, Fe2N - iron hydride, FeH or more correct FeHx
When nitrogen gas reacts with hydrogen to form ammonia, a chemical reaction occurs where nitrogen and hydrogen molecules combine to form ammonia molecules. This reaction is known as the Haber process and is catalyzed by iron or other metal catalysts. Ammonia is a key compound used in fertilizer production and many other industrial processes.
Nitrogen is largely unreactive under typical conditions and does not participate in the combustion reaction between hydrogen and oxygen. It remains as molecular nitrogen (N2) in the atmosphere after the combustion of hydrogen.