The thermochemical equation for the dissociation of hydrogen gas into atoms may be written as
`H_2 to 2H , Delta H = 436 kJ`
What is the ratio of the energy yield on combustion of hydrogen atoms to steam to the yield on combustion of an equal mass of hydrogen molecules to steam? `DeltaH_("combustion")` for `H_2` = -241.81 kJ .

Explanation

To solve the problem, we need to find the ratio of the energy yield on combustion of hydrogen atoms to steam compared to the yield on combustion of an equal mass of hydrogen molecules to steam.

### Step-by-Step Solution:

1. **Identify the Given Data:**
- The dissociation of hydrogen gas into atoms is given by the equation:
\[
H_2 \rightarrow 2H, \quad \Delta H = 436 \text{ kJ}
...