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