Hydrogen is naturally H2 so when you combine two H2 molecules, you will get 2H2. It won't be H4 as it will only exist in pairs, not fours.
If you are combining H + H, you will get H2
So either: H+H → H2
Or H2 + H2 → 2H2
Note, hydrogen chloride is usually known as hydrochloric acid. The equation is extremely simple. H2 + Cl2 = 2HCl.
Sodium (Na+) and Hydrogen (H+) do not mix because they are both positively charged.
Methane + Bromine --> Bromomethane + Hydrogen bromide
2H2 + 2NO --> 2H2O + N2
hydrogen peroxide (2H202)
HI
hydrogen peroxide
Cl2 + 2H = 2HCl
This equation is:Mg + H2SO4 = MgSO4 + H2
Note, hydrogen chloride is usually known as hydrochloric acid. The equation is extremely simple. H2 + Cl2 = 2HCl.
Aluminum reacts with hydrogen chloride yields aluminum chloride and hydrogen gas.
Synthesis reaction A+B=AB
Try........
H2o+no2
ITs a massive dildo or phone 118
H2(g) + Cl2(g) ==> 2HCl(g)
Absolutely.