Answer : The concentration of [tex]O_2[/tex] (g) in parts per million is, 8 ppm
Explanation : Given,
Mass of oxygen gas (solute) = 0.008 g
Mass of water (solvent) = 1000 g
First we have to calculate the mass of solution.
Mass of solution = Mass of solute + Mass of solvent = 0.008 + 1000 = 1000.008 g
Now we have to calculate the concentration of [tex]O_2[/tex] (g) in parts per million.
ppm : It is defined as the mass of solute present in one million [tex](10^6)[/tex] parts by mass of the solution.
[tex]ppm=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 10^6[/tex]
Now put all the given values in this expression, we get
[tex]ppm=\frac{0.008g}{1000.008g}\times 10^6=7.99=8ppm[/tex]
Therefore, the concentration of [tex]O_2[/tex] (g) in parts per million is, 8 ppm
