Answer:
The concentration of this solution is 133.33 ppm
Explanation:
The Parts per million (ppm) is a unit of measure of concentration that refers to the amount of units of substance that exist for every million units in the set.
It is a unit used to measure the presence of elements in small quantities, that is, traces.
In the case of water, or any solvent of density equal to 1 kg / L as in this case, ppm also indicates the mg (milligrams) in a kg (and since the density is 1 kg / L, one kg matches one liter) of dissolution.
Then the concentration in ppm (mass / volume) would be:
[tex]\frac{85mg}{0.75 L} =133.33 \frac{mg}{L} = 133.33 ppm[/tex]
The concentration of this solution is 133.33 ppm
