A mom is concerned about fluoridation in drinking water. She has read that the maximum contaminant concentration level goal for fluoride in drinking water is 4 ppm. The mom has discovered that her drinking water supply contains 0.8 ppm of sodium fluoride. I. How many milligrams of sodium fluoride are contained in one liter of drinking water containing 0.8 ppm of sodium fluoride?
II. What is the ratio strength concentration of sodium fluoride in drinking water that contains 0.8 ppm 1I. of sodium fluoride?
III. What is the ppm of fluoride in the mom's supply of drinking water? (molecular weight of NaF 42, I molecular weight of F = 19)