`20 mg` of `K^(o+)` ions are present in `1 L` of aqueous solution. Density of the solution is `0.8 mL^(-1)`. What is the concentration of `K^(o+)` ions in ppm?

Explanation

To find the concentration of \( K^{+} \) ions in ppm (parts per million), we can follow these steps:

### Step 1: Convert mass of \( K^{+} \) ions to grams
The mass of \( K^{+} \) ions is given as \( 20 \, \text{mg} \). To convert this to grams:
\[ W_2 = 20 \, \text{mg} = 20 \times 10^{-3} \, \text{g} = 0.020 \, \text{g} \]

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