The rates of most reaction double when their temperature is raised from `298K` to `308K`. Calculate their activation energy.

Explanation

To calculate the activation energy (Ea) given that the rate of a reaction doubles when the temperature is raised from 298 K to 308 K, we can use the Arrhenius equation and the concept of the temperature dependence of reaction rates.

### Step-by-Step Solution:

1. **Understand the Arrhenius Equation**:
The Arrhenius equation is given by:
\[
k = A e^{-\frac{E_a}{RT}}
...