Group 44 | Group Name : Group 44 |
Group Members : ONG HWEE PENG, MERVYN; TAN HUI LING, JOCELYN; PANG HUI XIA; LEONG SHE TENG; YONG LIUHONG ANNIE; MELISSA ONG YU LIN |
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1.
Desalination of water requires a lot of energy to break strong chemical bonds between salt and water and desalination techniques are relatively more costly. Therefore, it is not used widely. |
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2.
Water-soluble vitamins are polar compounds because “like dissolves like”. Polar compounds will dissolve in polar compounds,vice versa. Fat soluble vitamins are non-polar compounds because fat is not polar. |
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3.
a. do not have to use a dryer machine, so it cuts down electricity and burn less fuels, thus reducing the amount of sulfur dioxide emissions. b. less automobile transportation, reducing the amount of gasoline used, cutting down nitrogen oxide emissions. c. do not have to use dishwashers and washing machines that often, so it cuts down electricity and burn less fuels, thus reducing the amount of sulfur dioxide emissions d. hot water heater and pipes maintain its high temperature for longer periods, reduce the amount of electricity required to heat up the heater and pipes. This cuts down electricity and burn less fuels, thus reducing the amount of sulfur dioxide emissions. e. less automobile transportation, reducing the amount of gasoline used, cutting down nitrogen oxide emissions. the reduction of sulfur and nitrogen oxides emissions would lower the occurrences of acid rain |
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4.
a. coal-fired plants release sulfur dioxide which reacts with water to form sulfuric acid. Many molecules of sulfuric acid form tiny droplets. These droplets form aerosols that do not absorb sunlight but instead it reflects sunlight and reduce visibility. b. average pH of rainfall is 5.6, so the estimated pH of rainfall in Mammoth Cave National Park is 4.6 |
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5. [251] |
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6. [253] |
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7. [255] |
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8. [257] |
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9. [259] |
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10. [261] |