Question

predict which would produce more carbon dioxide when burned, a molecule of ethane or a molecule of octane? a molecule of dropdown would produce more carbon dioxide when burned because it contains more dropdown atoms than dropdown. etextbook and media save for later attempts: 0 of 3 used submit answer

Explanation:

Step1: Write combustion reactions

The combustion of ethane ($C_2H_6$) is $2C_2H_6 + 7O_2
ightarrow4CO_2+6H_2O$, and for octane ($C_8H_{18}$) is $2C_8H_{18}+25O_2
ightarrow16CO_2 + 18H_2O$.

Step2: Analyze carbon - atom content

Ethane has 2 carbon atoms per molecule and octane has 8 carbon atoms per molecule. When burned, each carbon atom is converted to a carbon - dioxide molecule.

Answer:

A molecule of octane would produce more carbon dioxide when burned because it contains more carbon atoms than ethane.