CM8001

Distillation and reverse osmosis are common desalination techniques. However, they are not widely used due to the high cost to remove salt.

Vitamins that are water-soluble because ‘like dissolves like’, and is hence considered polar. This is because they contain hydrophilic heads that allows them to dissolve in water molecules. Fat-soluble vitamins, on the other hand, cannot be dissolved in water, so it should not be polar compounds. This is because they generally contain hydrophobic exterior that is dissolvable in lipids. E.g. of fat-soluble vitamin is vitamin A.

3a. Hanging laundry will reduce consumption of electrical energy, which is produced from the burning of coal, which produces SOx.

3b. Less transport used, less NOx produced

3c. Reduce consumption of electrical energy, which is produced from the burning of coal. Hence SOx production is reduced.

3d. Prevent heat loss from hot water, reducing the amount of electricity required to heat up water, reducing SOx produced.

3e. Less preservatives used, hence less SOx and NOx produced. Lesser transportation is also required, reducing NOx produced.

a. Coal fired plants are responsible for producing sulfur dioxide and releasing a lot of other particulate matter into the air E.g. Soot. These byproducts of burning coal for fuel/energy thus leads to the poor visibility as they are not colourless.

b. Assuming pH of normal rainfall to be 6.7, more acidic by 10 times, hence pH of rainfall in Park is 5.7