CM8001

-Desalination requires large amount of energy.
-It is expensive.
-It produces saline brine as residue.
-The process can be complicated.

-Water soluble vitamins are polar compounds. They have polar groups and hence are able to dissolve in polar solvent such as water.
-Fat-soluble vitamins are non-polar compounds. They are soluble in non-polar solvents such as fatty tissue in the body. Fat-soluble vitamins are predominantly non-polar.

Generating electricity from sources such as coal will produce sulfur oxides, which can cause acid rain. Using transportation vehicles can generate sulfur oxides and nitrogen oxides, which can also cause acid rain.

a)Reduce the use of electrical dryer, hence reduce electrical consumption.
b)Reduce the use of private transportation, hence reducing SO2 and NO2 emission.
c)Reduce electrical consumption.
d)Reduce heat loss from the heaters and pipes, hence reducing electrical consumption for heat generation.
e)Less transportation is needed to transport food from one country to another.

a) Coal-fired plants will produce and emit pollutants such as soot, which reduces visibility in the vicinity of the plant.

b) A 10 times increase in acidity translate to a decrease in pH of 1. Since the pH of natural rain is around 5.6, the pH of the rainfall in the park is estimated to be 4.6.