Question

Ethane, with the chemical formula C2H6, is an example of _____.

an isotope
a hydrocarbon
a gasoline
a kind of coal

Answer 1

I am not a 100% but I think it is 
   A Gasoline

Answer 2

Answer: The correct answer is a hydrocarbon.

Hydrocarbons are the class of organic compounds, which are entirely  made up of Hydrogen and Carbon. Ethane is a saturated hydrocarbon.

As the chemical formula of ethane is C2H6. This indicates that it has two carbon and six hydrogen atoms in it.

Thus, ethane ( C2H6) is an example of hydrocarbon.