In Appleton, Wisconsin, the median indoor airborne concentration of chloroform (CHCl3) was found to be 0.35μg m-3. Convert this concentration to a mole fraction in parts per billion (ppb) assuming that T = 293 K and P = 1 atm.

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, .

Now we have to convert it into parts per billion (ppb).

As we know that,

and,

So,

Thus, the concentration to a mole fraction in parts per billion (ppb) is, 350 ppb