It is not technically 'made of' any elements as it is the element Hydrogen already.
The gas formed when hydrogen atoms fuse is helium. Stars do this.
When hydrogen gas reacts with fluorine gas, the product formed is hydrogen fluoride (HF) gas.
Mg + H2SO4 -> MgSO4 + H2 Hydrogen gas.
Hydrogen gas is formed when aluminum metal reacts with aqueous sodium hydroxide. The reaction produces aluminum hydroxide and hydrogen gas.
hydrogen gas
When hydrochloric acid (HCl) and magnesium (Mg) are mixed, they react to form magnesium chloride (MgCl₂) and hydrogen gas (H₂). The chemical equation for this reaction is: Mg 2 HCl → MgCl 2 H 2 Mg+2HCl→MgCl 2 +H 2 So, the gas that is formed in this reaction is hydrogen gas (H₂)
hydrogen
Hydrogen gas is not formed in this reaction because copper carbonate and sulphuric acid react to form water, carbon dioxide, and copper sulfate. The hydrogen atoms in the sulfuric acid are not released as hydrogen gas in this reaction.
When hydrogen gas reacts with oxygen gas, water vapor is formed.
When hydrogen and iodine are mixed, hydrogen iodide (HI) is formed. This compound is a colorless gas that is highly soluble in water.
Hydrogen.
water is formed H2O (2 hydrogen 1 oxygen)