Calculate the parts per million 172 mg of potassium ions in 850 ml of a water sample.

have 172 mg of potassium ions in 850 ml of water. First, you need to convert the volume of the solution (ml) to grams (g), assuming the density of water is approximately 1 g/ml. Now compute the ppm PPP =172/850 * 10^6 =202,352.94ppm