a. C6(H2O)6 = six Carbon atom and six Water.

b. –

c. No. The sweetness is determined by the stereomeric structure. The ketonic functional group in fructose is sweeter than aldo functional group in glucose.

Everything is made of chemicals. It is impossible to to on chemical-free diet.

– a lot of energy is required. Since it provides 1% of drinking water but takes 12500 desalination plants
– expensive
– requires more land use

Only water soluble vitamins are polar, because like dissolves like. Fat-soluble vitamins are non-polar therefore making them hydrophobic. A fat molecule has a hydrophilic head and hydrophobic tail. The fat-soluble vitamin will therefore choose the hydrophobic, non-polar tail to dissolve in.

(a) reduce use of dryer. So the electricity consumption is reduced. Thus amount of Sox produced from power plant is reduced.
(b) less Nix produced by automobiles
(c) save electricity thus less Sox produced by power plants
(d) same as (c)
(e) less shipping, so less fuel consumption, and less Nix produced

(a) coal-fired plants release SO2 -> sulphate particles that results in poor visibility. Sulphate particles reflect sunlight and results in low visibility.

(b) normal rain has a natural pH of 5-6. Thus 10 times more acidic than natural meant that pH will decrease by 1 unit. Thus resulting in an estimated pH of 4-5 at the park.

a) Exothermic. Heat released as it burns.

b) Endothermic. Water absorbs heat necessary for evaporation, skin feels cooler.

c) Endothermic. Ice absorbs heat necessary for melting.

The relative bond strength of the reactants must be stronger than that of the products.

Solid -> gas very rapidly, releasing energy quick and massive.

Heat: Energy flow from a hotter object to a colder object(motion).

Temperature: Determine the direction of heat flow, and the measure of the average speed of motion.

Example:
Heat.
1 ice on hand VS 5 ices on hand
More contact results in colder
Both case have the same temperature but more heat transferred from hand to 5 ices.

Temperature of hand is higher than ice. Therefore, heat transfers from hand to ice.

a) knocking characteristic of 98% isooctane and 2% of heptane.
– higher ability to burn smoothly without knocking
– more resistant to knocking

b) does not have enough information to know whether it contains oxygenates.