Final answer:
Neither -CH3CH2CH2CH2CH2NH2 nor -CH3CH=CHCH2CH3 is a form of pentane. Pentane is an alkane with a continuous chain of five carbon atoms with single bonds, represented as CH3CH2CH2CH2CH3. There are also isomeric forms of pentane, such as isopentane and neopentane.
Step-by-step explanation:
The question concerns the possible forms of pentane, which is a hydrocarbon with the formula C5H12. Among the two structures provided, -CH3CH2CH2CH2CH2NH2 and -CH3CH=CHCH2CH3, neither is a form of pentane. Pentane is an alkane with all single bonds and a continuous chain of five carbon atoms, represented by the structural formula CH3CH2CH2CH2CH3.
There are isomers of pentane as well, which have the same molecular formula but different structures. These isomers include isopentane and neopentane, with distinct structural arrangements and physical properties such as boiling points.
Naming hydrocarbons is very specific, and the nomenclature takes into account the length of the carbon chain as well as the presence and position of any branches or substituents.