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Chemistry
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Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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WATER GONE BAD! Read section 9.3 and 9.4 and use the Walkerton powerpoint on the class site to answer the following questions: 1. List the three categories of contaminants, and give at least two examples of each. 2. List four pollutants and state the dangers of each pollutant as well. 3. If a source contained the maximum acceptable concentration of tetrachloroethylene, which is 0.03ppm, what mass of the chemical would be present in 250 L of bath water? 4. The values for maximum acceptable concentration are based on an average daily intake of 1.5L of drinking water. If a community's drinking water contained the maximum acceptable concentrations of cadmium (0.005 ppm), lead (0.010 ppm), and mercury (0.001 ppm), how much of each metal would an average person consume in a year? 5. A 10.00 mL sample of drinking water was tested and found to contain 5.4 mg concentration compare with the maximum acceptable concentration of 45.0 ppm? `nitrate ion. How does the nitrate ion 6. What is the most important step in freshwater treatment? 7. Prepare a two-column list of the steps in the purification of drinking water. In the first column, list optional steps that would depend on local conditions. 8. What was the source of contamination in the Walkerton incident? 9. What is the difference between E.coli that is in our intestines and E.coli O157:H7 found in manure? 10. How could the Walkerton incident have been prevented? 11.What happens when water does not meet the microbiological, chemical and radiological standards? What possible effects will this untreated water have on humans? 12. How do pharmaceutical and other chemicals pass through the water treatment process and what effects do these chemicals have on wildlife/humans?
Transcribed Image Text:WATER GONE BAD! Read section 9.3 and 9.4 and use the Walkerton powerpoint on the class site to answer the following questions: 1. List the three categories of contaminants, and give at least two examples of each. 2. List four pollutants and state the dangers of each pollutant as well. 3. If a source contained the maximum acceptable concentration of tetrachloroethylene, which is 0.03ppm, what mass of the chemical would be present in 250 L of bath water? 4. The values for maximum acceptable concentration are based on an average daily intake of 1.5L of drinking water. If a community's drinking water contained the maximum acceptable concentrations of cadmium (0.005 ppm), lead (0.010 ppm), and mercury (0.001 ppm), how much of each metal would an average person consume in a year? 5. A 10.00 mL sample of drinking water was tested and found to contain 5.4 mg concentration compare with the maximum acceptable concentration of 45.0 ppm? `nitrate ion. How does the nitrate ion 6. What is the most important step in freshwater treatment? 7. Prepare a two-column list of the steps in the purification of drinking water. In the first column, list optional steps that would depend on local conditions. 8. What was the source of contamination in the Walkerton incident? 9. What is the difference between E.coli that is in our intestines and E.coli O157:H7 found in manure? 10. How could the Walkerton incident have been prevented? 11.What happens when water does not meet the microbiological, chemical and radiological standards? What possible effects will this untreated water have on humans? 12. How do pharmaceutical and other chemicals pass through the water treatment process and what effects do these chemicals have on wildlife/humans?
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