posted by sandra on .
The label on a one-pint bottle of water lists the following components. If the density is the same as pure water and you drink 2 bottles of water in one day, how many milligrams of each component will you obtain? calcium 28 ppm, fluoride 9ppm, magnesium 14 ppm, potassium3.0ppm, sodium 16ppm
I'll do the first one. The others are done the same way.
28 ppm Ca = 28 g Ca/10^6 g H2O =
28000 mg Ca/1,000,000 g H2O =
0.028 mg Ca/1 g H2O = now convert to 2pts = 1 quart = 0.946 L = 946 g H2O.
0.028 mg Ca/1 g H2O is the same as
0.028 mg Ca x 946/1 = ?? mg Ca in 2 pts H2O.