Question

Convert the MCL of antimony from milligrams per liter to parts per billion (ppb).

Answer 1

This is an incomplete question, here is a complete question.

According to the EPA, the maximum contaminant level (MCL) of antimony in drinking water is 0.0060 mg/L.

Convert the MCL of antimony from milligrams per liter to parts per billion (ppb).

Answer : The maximum contaminant level (MCL) of antimony in drinking water in parts per billion is, 6 ppb

Explanation :

ppb : It is defined as the mass of solute present in per 1000 million $(10^{-9}g)$ of total mass.

1 ppb = $\frac{10^{-9}g\text{ of solute}}{1g\text{ of solution}}$

As we know that:

1 milligrams per liter = 1000 parts per billion

or,

1 mg/L = 1000 ppb

As, 1 mg/L = 1000 ppb

So, 0.0060 mg/L = $\frac{0.0060mg/L}{1mg/L}\times 1000\text{ ppb}$

                             = 6 ppb

Thus, the maximum contaminant level (MCL) of antimony in drinking water in parts per billion is, 6 ppb