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1. Polychlorinated biphenyls (PCBs) are commonly used as cooling fluids for electrical transformers. True False Question 2 Match the abbreviation for an environmental criterion with its media or receptor. A. Drinking water B. Sediment C. Soil select A B C 1. MCL select A B C 2. PRG select A B C 3. PEC Question 3 Herbicides are the most abundant type of agricultural pesticide in use by weight. True False Question 4 DDT is a? A.Chlorinated organic pesticide B.Organophosphate pesticide C.PCB D.PAH Question 5 Which chemical is a potential endocrine disrupter? A.DDT B.PCBs C.PAHs D.Dioxins E.All of the above F.None of the above Question 6 Which is a persistent organic pollutant? A.Mercury B.Benzene C.DDT D.Arsenic Question 7 Which factor is NOT important in affecting the environmental mobility of organic compounds? A.Molecular weight B.Solubility in water C.Water hardness D.Volatility E.Polarity Question 8 Briefly discuss major environmental toxicological differences between metals and organic compounds. Question 9 In terms of copper toxicity at the Ely Mine Superfund site, describe how bioreceptors may be affected through the various pathways that we studied this session. Discuss humans and fish separately and specifically. Question 10 Discuss the advantages and disadvantages of DDT in modern society.
determine the structures of Compounds A, B, C, D, and E. Show calculations. Support all of your structure determinations. Student performed a sodium borohydride reduction experiment.
Construct a three-step synthesis of 3-bromocyclopentene from cyclopentane. Drag the appropriate items into the bins. Note that each bin should hold only one item, and not all reagents and structures will be used.
Complete the following reaction, which took place in a separatory funnel, between diphenylamine dissolved in ether and excess 5% HCl.
Determine relevant literature papers and draw the mechanism or catalytic cycle of stille coupling. Explain what the rate limiting step in the catalytic is
Question- I have lab project about unknown solution and I have Potassium nitrite from the choice for that Could help me what test I can do for potassium nitrite to proof that with details I need proficient help to solve the above problem
A reaction mixture initially containing 0.520 M H2S and 0.520 M SO2 was found to contain 1.0 x 10 -3. A second reaction mixture at the same temperature initially contains 0.245 and 0.335. calculate the equilibrium concentration of H2O in the secon..
When an external pressure of 2.00 is applied to the wire, the gas compresses from 5.90 to 2.95 . When the external pressure is increased to 2.50 , the gas further compresses from 2.95 to 2.36.
If 1.50g (NH4)2SO4 is dissolved in enough water to form 250 ml of solution, what is the molarity of the solution.
Calculate the percentage ionization of nitrous acid in a solution that is 0.222 M in nitrous acid (HNO2) and 0.278 M in potassium nitrite (KNO2). The acid dissociation constant of nitrous acid is 4.50 E -4. which E is an exponential of 10.
the molar heat of fusion of aluminum metal is 10.79 kjmol whereas its heat of vaporization is 293.4 kjmol.what quantity
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of Cr(OH)3(s) will be: Cr(OH)3(s) + Cl2O7(aq) --> CrO42-(aq) + ClO2-(aq)
What is the pH of the HCl solution before any of the NaOH solution is added. What volume of the NaOH solution is required to reach the equivalance point of the titration
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