Question 1 of 19 6.0 Points The drinking wat…


Question Description:

20.50

Question 1 of 19 6.0 Points The drinking water standard (MCL) for arsenic in water is 10 micrograms per liter. For a concentration of 0.29 milligrams per liter arsenic, the corresponding hazard quotient (HQ) is (only put your answer in the blank; do not attempt to show your work): Question 2 of 19 6.0 Points 3.9 milligrams per liter of copper equals 3,900 micrograms per liter of copper. True False Question 3 of 19 10.0 Points Chapter 3: What are the pathways of toxicant uptake by plants? Which is the most important for the uptake of metals? Question 4 of 19 10.0 Points Chapter 3: Many organic contaminants cross the barrier of the skin because they are soluble in lipids. True False Question 5 of 19 10.0 Points Chapter 3: What are the principal pathways of chemical uptake by terrestrial animals including humans? Question 6 of 19 10.0 Points Chapter 3: In fish, which organs are involved in the regulation of electrolytes? Describe how they function in freshwater and seawater. Question 7 of 19 3.0 Points The hazard quotient for surface-water sample EB-1 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 8 of 19 3.0 Points The hazard quotient for surface-water sample EB-2 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 9 of 19 3.0 Points The hazard quotient for surface-water sample EB-3 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 10 of 19 3.0 Points The hazard quotient for surface-water sample EB-4 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 11 of 19 3.0 Points The hazard quotient for surface-water sample SB-1 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 12 of 19 3.0 Points The hazard quotient for surface-water sample SB-2 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 13 of 19 3.0 Points The hazard quotient for surface-water sample SB-3 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 14 of 19 3.0 Points The hazard quotient for surface-water sample SB-4 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 15 of 19 3.0 Points The hazard quotient for surface-water sample SB-5 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 16 of 19 3.0 Points The hazard quotient for surface-water sample OR-1 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 17 of 19 3.0 Points The hazard quotient for surface-water sample OR-2 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 18 of 19 3.0 Points The hazard quotient for surface-water sample OR-3 relative to the human drinking water maximum contaminant limit (MCL) is ? Provide your answer to two decimal places (X.XX). Question 19 of 19 12.0 Points The surface-water sites that exceeded the drinking water standard (MCL) are: A. EB1 B. EB2 C. EB3 D. EB4 E. SB1 F. SB2 G. SB3 H. SB4 I. SB5 J. OR1 K. OR2 L. OR3

Answer

20.50