Question

CH3 - CH2 CH2 -CH3 | | CH2 - CH2

Answer 1

Это 2,3-диметилбутан

Answer 2

The structure you provided appears to be a representation of a molecule, specifically an alkane. Alkanes are hydrocarbons consisting of carbon and hydrogen atoms, with the general formula CnH2n+2.

In the structure you provided:

• CH3 represents a methyl group, consisting of a single carbon atom bonded to three hydrogen atoms.
• CH2 represents a methylene group, consisting of a single carbon atom bonded to two hydrogen atoms.
• CH2CH2 represents an ethylene group, consisting of two carbon atoms bonded together with a double bond and each carbon atom bonded to two hydrogen atoms.
• CH3 represents another methyl group, similar to the first one.

Putting it all together, the molecule can be named as 2,3-dimethylbutane. It consists of a butane backbone (four carbon atoms in a row) with two methyl groups attached to the second and third carbon atoms.

The structural formula can be represented as follows:

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      CH3       CH3
       |           |

CH3 - CH2 - CH2 - CH2 - CH3 | CH2