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Free radicals are also important in many environmentally significant reactions. For example, photochemical smog, which forms as a result of the action of sunlight on air pollutants, is formed in part by the following two steps.
NO2 -?UV light NO + OO + O2 -? O3
The product of this reaction, ozone, is a pollutant in the lower atmosphere. Ozone is an eye and lung irritant and also accelerates the weathering of rubber products. Write Lewis structures for each of the reactants and products in the preceding reactions.
An unknown gas X effuses 1.65 times faster than C3H8. What is the molecular mass of gas X?
The first four ionization energies of an atom X are 590, 1145, 4912 and 6491 kJ/mol. Suggest to which periodic group X belongs and give reasons for your choice. Write out possible chemical equations that correspond to these transformations.
10.2 g of ice at -4.8oC is added to 164 mL of water at 50.1oC. What is the final temperature (oC) of the mixture
We did TLC and column chromatography separating methylene blue and fluorescein. The solvent contained mostly ethanol but also had NaOH, and this NaOH formed SiO- with the silica (the stationary phase), which is in competition with the solvent for ..
Suppose you were instructed to add 38 g of sodium chloride (NaCl) to 100 mL of water. a. prepared as instructed at 20°C b. heated the mixture in (a) to 100°C
What was the pH at the end of the reaction? e) What would the final pH be in the absence of any buffer?
Find the pH of a solution prepared by dissolving all of the following compounds in one beaker and diluting to a volume of 1.00 L: 0.180 moles acetic acid (pKa=4.75), 0.180 mole sodium acetate
perform the degrees-of-freedom analysis and calculate the rates of (1) fresh propane feed, (2) propane entering and (3) exiting the reactor
A piston has an external pressure of 8.00 \rm atm. How much work has been done if the cylinder goes from a volume of 0.170 liters to 0.530 liters.
iron has a density of 7.874 gcm3. what is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000
Find the pH and volume (mL) of 0.0372 M NaOH needed to reach the equivalence point(s) in titrations of 20.0 mL of 0.0892 M H2SO3 (two equivalence points)
Water is about 15% denser than oil. What implication does this difference have on seabirds and other animals that swim
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