Molecular
The reaction is:Cd + 2 HBr = CdBr2 + H2
Ca(s) + 2HNO3(aq) -> Ca(NO3)2(aq) + H2(g)
Copper is a metal & solid
The reaction between magnesium (Mg) and hydrochloric acid (HCl) produces magnesium chloride (MgCl2) and hydrogen gas (H2). This is a single displacement reaction, also known as a redox reaction, where the magnesium displaces the hydrogen in HCl to form MgCl2 and H2.
Sugar is a molecular solid
H2 is the formula of the diatomic molecule of hydrogen.
H2 bios is a type of bios specifically made for notebooks.
The reaction is:Cd + 2 HBr = CdBr2 + H2
H2 is the molecular formula for hydrogen gas; H is the chemical formula for one atom of hydrogen, whether it be gas, liquid, or solid.
Reactions of Lead (Pb) with cold, dilute acids are very slow. Some examples are as follows:- 1) Reaction with dil. HCl and gives PbCl2 and H2 gas. Pb + 2HCl ---> PbCl2 + H2 Solid Aqs. Aqs. Gas 2) Reaction with dil. H2SO4 and gives PbSO4 and H2 gas. Pb + H2SO4 ----> PbSO4 + H2 Solid Aqs. Aqs. Gas 3) Reaction with dil. HNO3 and gives Pb(NO3)2 and H2 gas. Pb + 2HNO3 ------> Pb(NO3)2 + H2 Solid Aqs. Aqs. Gas Regards- Ashutosh talktomehiya@gmail.com
Hydrogen (H2) in palladium metal.
The balanced equation for the synthesis of hydriodic acid from hydrogen gas and solid iodine is: H2 (g) + I2 (s) → 2HI (g)
Ca(s) + 2HNO3(aq) -> Ca(NO3)2(aq) + H2(g)
The reaction equation is: Mg,solid + 2H2O --> Mg(OH)2 + H2,gas
Solid /liquid solid
This reaction is:Mg + 2 H2O(g) = Mg(OH)2 + H2
decomposition