From the following data of `Deltah`, of the following reactions,
a. `C(s) +1//2O_(2)(g) rarr CO(g),DeltaH^(Theta) =- 110 kJ`
b. `C(s) +H_(2)O(g) rarr CO(g)+H_(2)(g), DeltaH^(Theta) = 132 kJ`
Calculate the mole composition of the mixture of steam and oxygen on being passed over coke at `1273K`, keeping the tempertaure constant.

Explanation

To solve the problem, we need to analyze the given reactions and their enthalpy changes (ΔH) to find the mole composition of steam (H₂O) and oxygen (O₂) when passed over coke (C) at a constant temperature of 1273 K.

### Step-by-Step Solution:

1. **Identify the Reactions and Their Enthalpy Changes:**
- Reaction (a):
\[
C(s) + \frac{1}{2}O_2(g) \rightarrow CO(g), \quad \Delta H^\Theta = -110 \text{ kJ}
...