Answer : The concentration to a mole fraction in parts per billion (ppb) is, 350 ppb
Explanation :
As we are given that the concentration of chloroform is, [tex]0.35\mu g/m^3[/tex].
Now we have to convert it into parts per billion (ppb).
As we know that,
[tex]1\mu g/m^3=10^{-6}g/m^3[/tex]
and,
[tex]1\text{ ppb}=10^9[/tex]
So,
[tex]0.35\mu g/m^3=0.35\times 10^{-6}g/m^3=0.35\times 10^{-6}\times 10^9\text{ ppb}=350\text{ ppb}[/tex]
Thus, the concentration to a mole fraction in parts per billion (ppb) is, 350 ppb
