list chemical properties of Persistent organic pollutants. Why does human exposure to Persistent organic pollutants start very early?
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list chemical properties of Persistent organic pollutants. Why does human exposure to Persistent organic pollutants start...
If three jars of the same amount of hexachlorobenzene, ethanol, and benzyl alcohol are left open in a room, which of them would have the highest air concentration after the same period? Why? You can ignore degradation process in this question. Hint: a higher vapor pressure would mean the chemical has a higher tendency to evaporate. 2. Which of these chemicals are considered persistent organic pollutants by the Stockholm Convention (Links to an external site.)Links to an external site.? Name...
1. How does human technology contribute to environmental chemical pollution? Please list examples.
1. what are some of the properties which make water a good environment for chemical reactions ? 2. What is an acid? Base? What is considered acidic or basic or neutral? Which substance/ compound is neutral? Know the pH scale—what does it tell us, what is it based on (its relation to H+ ion concentration)? It ranges from 0 to 14. Know which points/numbers on the scale are acidic, which are basic, which is neutral. What is the difference in...
Equity Sourcing Strategy:Why does the strategic path to sourcing equity start with debt? Foreign Equity Listing andIssuance: Give five reasons why a firm might cross-list and sell its shares on a very liquid stock exchange.
Section Name Experiment 2 Advance Study Assignment: Properties of Systems in Chemical Equilibrium 1. Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(aq) H(aq) + MO (aq) red yellow If methyl orange is added to distilled water, the solution turns yellow. If a drop or two of 6 M HCl is added to the yellow solution, it turns red. If to that solution one adds a few drops of 6 M NaOH...
2. List some familiar adaptations animals have to reduce the effects of temperature extremes on their many vital, enzyme-catalyzed reactions. 3. In general, the rates of chemical reactions double for every 10 degrees (Celsius) increase in temperature. What changes at the molecular level account for slower reaction rates of enzyme- catalyzed reactions at high temperatures? (Hint: enzymes are protein molecules. What happens to protein molecules when they are heated?) Why are enzyme catalyzed reactions also slower at low temperatures? (Hint:...
Which list incudes elements with the most similar chemical properties? B) Cr, Pb, Xe 37) D) N, O, F O,S, Se C) As the elements in Period 3 are considered in order of increasing atomic number, there is a general decrease in C) atomic mass D) atomic radius A) first ionization energy B) electronegativity Element K reacts with chlorine to form an ionic compound that has the formula XCl,. To which group on the Periodic Table coul element X'belong? A)...
New Jersey state lawmakers last year passed a bill that would have required the Drinking Water Institute to formulate a state regulation, known as a maximum contaminant level (MCL), for TCP. Governor Chris Christie refused to sign the bill. The discovery of the chemical 1,2,3- trichloropropane (TCP) in two public water wells has recently renewed concerns from residents in the Burlington County, NJ community. a. Describe the situation in NJ. b. Who do you think may be the major PRPs...
Name 3. How does the human virus (HIV) affect the body? (A) It cuts off blood supply to the brain. (B) It causes i Which of the following does OSHA consider A) NA is stuck by a needle (CQ NA does not discard her personal protec (D) NA was recently diagnosed with cances employees, residents, and visitors (C) It causes diabetes irn bystem (B) Resident makes a (D) It weakens the immune system so that the body cannot fight infection....
than other labs. These are toxicity, volatility, and flammability. We routinely use toxic organic solvents like methanol and acetone that are volatile (have low boiling points), but even solid organic materials can produce vapors that may be toxic. Furthermore, organic materials are flammable, and solvent vapors in the air can and do produce explosive mixtures. You should take some general precautions when doing organic chemistry: Do not get solutions on your skin. You do not need to always wear gloves...