Find `Delta H_(f)^(@)` of `Fe_(2)O_(3)(s)` if the standard heat reaction `Fe_(2)O_(3)(s)+3CO(g)rarr 2Fe(s)+3CO_(2)(g)` is -6.6 kcal. Given `Delta H_(f)^(@)CO(g)=-26.4 kcal. Delta H_(f)^(@)CO_(2)(g)=-94 kcal`.

Explanation

To find the standard enthalpy of formation (ΔH_f^(@)) of Fe₂O₃(s), we will use the given reaction and the standard enthalpies of formation for CO(g) and CO₂(g).

### Step-by-Step Solution:

1. **Write the Reaction and Given Data:**
The reaction is:
\[
\text{Fe}_2\text{O}_3(s) + 3\text{CO}(g) \rightarrow 2\text{Fe}(s) + 3\text{CO}_2(g)
...