An aqueous solution contains `10%` amonia by mass and has a density of `0.99 g cm^(-3)`. Calculate hydroxy`1` and hydrogen ion concentration in this solution `K_(a)` for `NH_(4)^(o+) = 5.0 xx 10^(-10)M`.

Explanation

To solve the problem of calculating the hydroxyl (OH⁻) and hydrogen (H⁺) ion concentrations in a 10% ammonia solution with a density of 0.99 g/cm³, we can follow these steps:

### Step 1: Calculate the mass of the solution
Given that the density of the solution is 0.99 g/cm³, we can find the mass of 1 liter (1000 cm³) of the solution.

\[ \text{Mass of 1 L solution} = \text{Density} \times \text{Volume} = 0.99 \, \text{g/cm}^3 \times 1000 \, \text{cm}^3 = 990 \, \text{g} \]
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