Water, aka H2O
oxygen
Hydrogen burns in air, usually with a loud pop.
Hydrogen.
hydrogen burns in air with a pop sound
Hydrogen is already a element in the air. So in other words, nothing will happen. +++ That is Not Correct on both counts. Think about it: hydrogen is extremely flammable. Hydrogen is an element, yes, but not a component of the atmosphere, except perhaps in vanishingly tiny quantities. Besides, the question posits a deliberate mixing. Hydrogen burns in air, i.e. combines exothermically with oxygen that IS in the atmosphere, producing water.
Titanium
Water.
Steam
Hydrogen chloride (HCl). It is commonly known as hydrochloric acid.
When hydrogen burns in air with H2+O2= H20
It burns very easily in air. With the right ratio of air-to-hydrogen, it is explosive.
Hydrogen can be found in water and air.