Group 40

Group 40 Group Name : Group 40
Group Members :
LIM LING YAN, NGO YUN XUAN, SERENE GOH JIA HUI, CHIN SOK FANG, JONATHAN KENICHI WIRAHARA, THARAYIL SANTHOSHKUMAR ABHIRAMA
1.

One of the processes involved in desalination is distillation. Distillation is not a good technique to produce potable drinking water because distillation technique removes salts completely thus creating pure water. Drinking water that we use usually contains mineral, so it is not really a good process for drinking usage. Distillation is also very costly and requires large amount of energy and resources.

2.

If it is water-soluble, it is a polar compound because polar solute dissolves in polar solvent. Fat-soluble compounds is non-polar and dissolves in non-polar solvents.

3.

For a, b, c& d, it concerns the methodologies on reducing electricity consumption. With lesser electricity consumed, power plants would burn lesser fuel to spin the turbine for electricity. Lesser fuel burnt means lesser emissions of nitrogen oxides and sulfur oxides which are key sources of acid rain production.

For e, it takes a large amount of energy for fuel to travel from “field to plate” if food were imported. Buying locally grown produce and produced food reduces the amount of energy consumed on transportation and means less burning of fossil fuels where its by-products would lead to acid rain.

4.

a. Coal-fired plants produce lots of sulfur oxides and nitrogen oxides and also produce smoke and particulate matter which causes haze.

b. pH would be about 5 because natural rain has an estimated pH of 6

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