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Basic Chemistry Practice Test: Chemistry of the Environment
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Environmental chemistry is the study of chemical processes in the air, water, soil, and living environments. It also studies how human activity affects these environments.  Environmental chemistry is an interdisciplinary science that includes atmospheric, aquatic, and soil chemistry. It involves studying the sources, reactions, transport, effects, and fates of chemical species in these environments.  Environmental chemists monitor the air, water, and soil to understand how chemicals enter the environment and affect human and ecological health. They also assess the long-term risks of... Show more
Basic Chemistry Practice Test: Chemistry of the Environment
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25 Questions

1. The C–Cl and C–F bond dissociation energies in CF3Cl are 339 kJ/mol and 482 kJ/mol, respectively. The maximum wavelengths of electromagnetic radiation required to rupture these bonds are __________ and __________, respectively.
2. Which one of the following could be produced by anaerobic bacteria decomposing biodegradable waste?
3. Ozone depletion from chlorofluorocarbons is chiefly due to the production of free chlorine.
4. What is/are the product(s) of photodissociation of molecular oxygen?
5. The sterilizing action of chlorine in water is due to what substance __________?
6. In the presence of oxygen, the nitrogen present in biodegradable material ends up mainly as __________.
7. In the past, CFCs were not used in __________.
8. A single individual typically uses the greatest quantity of water for __________.
9. Why does ozone not form in high concentrations in the atmosphere above 50 km?
10. The 'scale' caused by hard water is __________.
11. Ozone is a necessary, protective component of the __________, but is considered a pollutant in the __________.
12. Select the substance that is thought to be partially responsible for depleting the concentration of ozone in thestratosphere.
13. Which one of the following is a source of carbon dioxide in the troposphere?
14. The bond energy of oxygen is higher than that of nitrogen.
15. What is the percentage of freshwater on planet Earth __________?
16. As one gains altitude in the atmosphere, based on the ionization energies shown below, which sequence of mole fractions is the correct one? Process Ionization Energy (kJ/mol) N2 + h. . N2+ + e- 1495 O2 + h. . O2+ + e- 1205 O + h. . O+ + e- 1313 NO + h. . NO+ + e- 890
17. Cl atoms formed via photolysis of C-Cl bonds of chlorofluorocarbons in the stratosphere are particularly effective in destroying ozone at these altitudes because __________.
18. The primary detrimental effect of the presence of large amounts of biodegradable organic materials in water is __________.
19. The reaction that forms most of the acid in acid rain is __________.
20. The mole fraction of neon in dry air near sea level is 1.818 × 10-5 where the molar mass of neon is 20.183. The concentration of neon in the atmosphere is __________ ppm.
21. Which one of the following substances found in the atmosphere will absorb radiation in the infrared portion of the spectrum?
22. The concentration of ozone in Los Angeles is 0.67 ppm on a summer day. This means that if the total pressure is 735 torr, then the partial pressure of O3 is __________ torr.
23. The concentration of Br- in a sample of seawater is 8.3 × 10-4 M. If a liter of seawater has a mass of 1.0 kg, the concentration of Br- - is __________ ppm.
24. The liquid portion of the Earth is called the __________.
25. Sulfur dioxide is not released into the atmosphere in any significant amount by __________.

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