Exam 21: Environmental Chemistry

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What is the wavelength of a photon needed to dissociate an O3 molecule whose bond energy is 107.2 kJ/mol (h =6.63 × 10-34J s; c = 3.0 × 108m/s; and Avogadro's number = 6.022 × 1023 molecules/mole)?

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Which of the following is a catalyst in the destruction of ozone?

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Volcanoes

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The gases spewed into the atmosphere when a volcano erupts are N2,H2S,HCl,HF,CO2,and water vapor.

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What is the name given to SO2 in the troposphere that is oxidized to H2SO4 in the form of aerosol which ends up in wet precipitation?

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An unusual atmospheric reaction leading to ozone destruction is CF3O + O3 → CF3O2 + O2 The analysis of which has yielded an Arrhenius frequency factor (A)and activation energy of 2.0 × 10-12 cm3 molecule-1 s-1 and 11.6 kJ/mol,respectively.Calculate the rate constant for this reaction at an altitude of 35 km,where the temperature is -34°C.

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The major contributor to the greenhouse effect is H2S.

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The rate constant of the reaction O + O3 → 2O2 is 7.0 × 105 M-1 s-1 at -40°C and 4.8 × 106 M-1 s-1 at 25°C.Calculate the activation energy of this reaction.

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Which one of these species exists as a diatomic element at room temperature?

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What is the meaning of an asterisk beside an atom or molecule?

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Which of the following has not been blamed on the destruction of the ozone layer?

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In order for a gas to be a "greenhouse gas" it must

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What was responsible for the "orange glow" observed by astronauts on the outside surface of their space shuttle as they orbiting the Earth?

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What is the layer of the atmosphere called where the concentration of ozone and other gases is low and the temperature decreases with increasing altitude?

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What is the wavelength of a photon needed to dissociate an S2 molecule whose bond energy is 226 kJ/mol (h = 6.63 × 10-34J s; c = 3.0 × 108m/s; and Avogadro's number = 6.022 × 1023 molecules/mole)?

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The principal contributor to acid rain is A.CO2. B.SO2. C.O3. D.NO2.

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Which one of the following indoor air pollutants has adverse health effects because it is radioactive?

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What is the name given to the spectacular celestial light shown in the sky resulting from electrons and protons in space ejected from solar eruptions?

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Name four regions of the atmosphere in order of increasing altitude.

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Give two important reasons why there is so much more Na+ in the oceans than K+,despite their similar abundances in the Earth's crust.

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