University:
Eastern Kentucky University
Course:
MAT 122 | Precalculus Mathematics
Academic year:

2022
Views:

205

Pages:

1
Author:

Shyanne Johnson

PARTS PER MILLION WORKSHEET (key) 1. 25 grams of a chemical is dissolved in 75 grams of water. a. What is the concentration of the chemical in parts per hundred (pph)? __25__ X 100 = 25 pph (25+75) b. What is the concentration of the chemical in parts per thousand (ppt)? __25__ X 1000 = 250 ppt (25+75) c. What is the % of solute in this solution? __25__ X 100 = 25% (25+75) 2. Suppose 17 grams of sucrose is dissolved in 183 grams of water. What is the concentration of sucrose in pph ? ppm? __17__ X 100 = 17 pph __17__ X 1,000,000 = 170000 ppm (17+183) (17+183) 3. 35 grams of ethanol is dissolved in 115 grams of water. What is the concentration of ethanol in parts per billion (ppb)? __35___ X 1,000,000,000 = 233,333,333.33 ppb (35+115) 4. The solubility of NaCl is 284 grams/100 grams of water. What is this concentration in ppm? 284 X 1,000,000 = 284000 ppm 100 5. The solubility of AgCl is 0.008 grams/100 grams of water. What is this concentration in ppm? .008 X 1000000 = 80 ppm 100 6. A certain pesticide has a toxic solubility of 5.0 grams/Kg of body weight. What is this solubility in ppm? 1 Kg X 1000 g = 1000 g __5__ X 1,000,000 = 5000 ppm 1 1Kg 1000 7. Change 50 ppm to ppb. 50 ppm = 50 X 1,000,000 = 50,000,000 50,000,000 X 1,000=50,000,000,000 50,000,000,000 = 50 ppb 8. How many parts per million (ppm) is 1mg/L? 1 ppm