`10 mL` of a given solution of `H_(2)O_(2)` contains `0.91 g` of `H_(2)O_(2)`.
Express its strength in volume.

Explanation

To express the strength of the given solution of hydrogen peroxide (H₂O₂) in volume, we can follow these steps:

### Step 1: Determine the mass of H₂O₂ in grams
We are given that the solution contains 0.91 grams of H₂O₂.

### Step 2: Use the molar mass of H₂O₂
The molar mass of H₂O₂ is calculated as follows:
- Hydrogen (H) = 1 g/mol, so for 2 H: 2 × 1 = 2 g/mol
...