Exam 2 - 2. Fossil fuels are hydrocarbons comprised of...

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Unformatted text preview: 2. Fossil fuels are hydrocarbons comprised of primarily carbon and hydrogen and some sulfur, nitrogen, oxygen, and mineral matter. (2 points) Fossil fuels are hydrocarbons comprised of primarily carbon and hydrogen and some sulfur, nitrogen, oxygen, and mineral matter. [Refer to Page 59 of the text book.] Points Earned: 2/2 Correct Answer: True Your Response: True 3. VOCs (unburnt hydrocarbons) are secondary pollutants. (2 points) The pollutants that are emitted directly from a combustion process are called primary pollutants. [Refer to Page 60 of the text book.] Points Earned: 2/2 Correct Answer: False Your Response: False 4. Currently natural gas usage accounts for the highest amount of carbon dioxide emissions in the US. (2 points) In 2000, 39.7 percent of U.S. fossil-fuel emissions come from the consumption of petroleum products and coal usage accounts for 37 percent of U.S. fossil-fuel CO2 emissions. About 21.1 percent of the CO2 emissions are as a result of natural gas use. [Refer to Page 61 of the text book.] Points Earned: 2/2 Correct Answer: False Your Response: False 5. The primary source for nitrogen oxide emissions in the US is motor vehicles (2 points) The primary sources of NOx are motor vehicles, electric utilities, and other industrial, commercial, and residential sources that burn fuels (Figure 4.7 in the text book) Points Earned: 2/2 Correct Answer: True Your Response: True 6. Sulfates formed from SO 2 emissions from power plants and industrial facilities are "Primary" particles (2 points) "Secondary" particles are formed in the atmosphere from primary gaseous emissions. Examples of secondary particles are sulfates formed from SO2 emissions from power plants and industrial facilities; [Refer to Page 64 of the text book.] Points Earned: 2/2 Correct Answer: False Your Response: False 7. NO x react in the air with VOCs to form ground-level ozone which is associated with adverse health effects. (2 points) NOx react in the air to form ground-level ozone and fine particulates, which are associated with adverse health effects. [Refer to Page 65 of the text book.] Points Earned: 2/2 Correct Answer: True Your Response: True 8. Potential Global Warming can lead to melting polar ice caps. (2 points) Climate models indicate that global warming will be felt most acutely at high latitudes, especially in the Arctic where reductions in sea ice and snow cover are expected to lead to the greatest relative temperature increases. [Refer to Page 79 of the text book.] Points Earned: 2/2 Correct Answer: True Your Response: True 9. Sulfuric acid is formed when _____. (2 points) A. NO x is oxidized in the atmosphere to form NO and then dissolved in clouds B. SO is oxidized in the atmosphere to form SO 2 and then dissolved in clouds C. SO 2 is oxidized in the atmosphere to form SO 3 and then dissolved in clouds D. SO 3 is oxidized in the atmosphere to form SO 2 and then dissolved in clouds SO 2 when emitted into the atmosphere slowly oxidizes to SO...
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Exam 2 - 2. Fossil fuels are hydrocarbons comprised of...

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