CH4-ch3cl-c2h6-c2h5cl-c3h8-c3h6-h2

It seems you've listed a series of chemical compounds, particularly hydrocarbons and chlorinated hydrocarbons. Let’s break them down:

1. CH₄: Methane - the simplest alkane, consisting of one carbon atom and four hydrogen atoms.

2. CH₃Cl: Methyl chloride - a chlorinated derivative of methane, where one hydrogen has been replaced by a chlorine atom.

3. C₂H₆: Ethane - a simple alkane with two carbon atoms and six hydrogen atoms.

4. C₂H₅Cl: Ethyl chloride - a chlorinated derivative of ethane, where one hydrogen has been replaced by a chlorine atom.

5. C₃H₈: Propane - a three-carbon alkane with eight hydrogen atoms.

6. C₃H₆: Propylene (or Propene) - an alkene with three carbon atoms and six hydrogen atoms, characterized by a carbon-carbon double bond.

7. H₂: Molecular hydrogen - the simplest diatomic molecule, consisting of two hydrogen atoms.

If you need specific information about these compounds, such as their properties, uses, reactions, or any other details, please provide more context!