* Octane's Chemical Formula: Octane has the chemical formula C₈H₁₈.
* Ratio: This formula tells us there are 8 carbon atoms (C) and 18 hydrogen atoms (H) in each molecule of octane.
* Simplified Ratio: The simplest whole-number ratio of carbon to hydrogen is 8:18, which can be further simplified to 4:9.
Therefore, the ratio of carbon atoms to hydrogen atoms in octane is 4:9.
