The given hydrocarbon is CH₃ - CH₂ - CH₂ - CH₂ - CH₃  

The International Union of Pure and Applied Chemistry (IUPAC) has standardized the system for naming organic compounds. Here's how you find the IUPAC name for CH3 - CH2 - CH2 - CH2 - CH3  

1. Identify the longest carbon chain in the molecule: This hydrocarbon compound has a chain of five carbon atoms (C) connected by single bonds. Here it 5 i.e Pent
2. Assign numbers to the carbon atoms in the chain: In this particular compound, you can number the chain from either end since there are no branches or substitutions. This gives you:
3. C¹H3 - C²H2 - C³H2 - C⁴H2 - C⁵H3  
4. Identify and name the main chain along with any branches or substituents: This compound has no branches or substituents, and it's a straight chain of carbon atoms with only single bonds, which is an alkane. The name given to an alkane with five carbon atoms in its main chain is "pentane".
5. Combine all these parts to get the IUPAC name: Since there are no substituents or branches to consider, the IUPAC name of the compound is simply "pentane".

Additional Information

Conclusion:-

Hence, the IUPAC name of CH3 - CH2 - CH2 - CH2 - CH3   is "pentane".