Calculate the `H_(3)O^(+)` ion concentration of a solution having pH 6.58.

Explanation

To calculate the `H3O^+` ion concentration of a solution with a pH of 6.58, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the relationship between pH and `H3O^+` concentration**:
The pH of a solution is defined as:
\[
\text{pH} = -\log[H_3O^+]
...