`DeltaH` combustion for `CH_(4),C_(2)H_(6)`, and `C_(3)H_(8)` are `-210.8,-368.4` and `-526.3 kcal mol^(-1)`, respectively. Calculate `DeltaH` combustion for `C_(8)H_(18)`

Explanation

To calculate the enthalpy change of combustion (ΔH_combustion) for octane (C₈H₁₈), we can use the given ΔH_combustion values for methane (CH₄), ethane (C₂H₆), and propane (C₃H₈).

### Step-by-Step Solution:

1. **Identify the given ΔH_combustion values:**
- ΔH_combustion for CH₄ = -210.8 kcal/mol
- ΔH_combustion for C₂H₆ = -368.4 kcal/mol
- ΔH_combustion for C₃H₈ = -526.3 kcal/mol
...