Ten hydrocarbon structural formulas are drawn below (A through J). All these hydrocarbons have eight carbon atoms. You should be able to answer the following questions without counting the individual hydrogen atoms in each formula.

Enter letters (Athrough J), corresponding to your selections, in each answer box.
Do not enter superfluous characters, since they will be counted as incorrect answers.
1. Which compounds have the molecular formula C₈H₁₄?...
2. Which compounds have the molecular formula C₈H₁₂?...
3. Which compounds have the molecular formula C₈H₁₀?...
4. Which compounds have the molecular formula C₈H₈?.....
5. Which compound(s) have the greatest unsaturation?.......