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  1. G

    does anyone not drink

    one does not need to drink to have a good time. i think that guys have all this sterotype crap they have to uphold, so if they are out on the town with their mates, they feel the need to drink to impress. And bTy, whats so good about drinking 12 stubbies, ones enough.
  2. G

    Hsc Marathon 2009 - Chemistry

    Biomass is material produced by living organisms; mainly it is plant material though the term also includes animal excreta and material made by algae. Cellulose is the major chemical component of biomass. Q. what are the two processes for breaking cellulose into glucose?
  3. G

    Hsc Marathon 2009 - Chemistry

    I am soo slow at typing! Lol
  4. G

    Hsc Marathon 2009 - Chemistry

    alkanols are a sub group class of compounds called alcohols. they contain the -OH functional group. an example is ethanol - C2H5OH Q. why is it necessary to produce technetium-99m at or close to the hospital using it? im so sorry im so bad at this :)
  5. G

    Hsc Marathon 2009 - Chemistry

    woops, sorry
  6. G

    Hsc Marathon 2009 - Chemistry

    Fractional distillation is used to separate mixtures of miscible liquids, such as ethanol and water. The process depends on the components of the mixture having different boiling points. The liquid is heated so that it turns into a gas. The vapours pass up a fractionating column where they are...
  7. G

    Hsc Marathon 2009 - Chemistry

    Some typical uses of petrochemicals are: - vinyl acetate for paint, paper and textile coatings vinyl chloride for - polyvinyl chloride PVC) - resin manufacture - ethylene glycol for polyester - textile fibers - styrene which is important in rubber and plastic manufacturing. Q. what...
  8. G

    Hsc Marathon 2009 - Chemistry

    OOft, this is a hard one to do! Ill try my best in answering. Cellulose is a polymer of which the monomer units are glucose. it can be writtten as OH-(C6H12O6)-OH. when glucose molecules combine to form cellulose, the OH on the right -hand C atom of one molecule combines with the OH of the...
  9. G

    Hsc Marathon 2009 - Chemistry

    dissolve 20g of glucose in 250mL of water in a conical flask. have a delivery tube at the top passing into a beaker of limewater. weigh each seperately. allow to stand for up to 5 days in a warm atmoshere (prefferebly an incubator 30-35 degrees) Reweigh both vessels at daily intervals and...
  10. G

    what TEXTBOOK do you use?!

    Our school uses fitzpatrick but the polynomials is pretty hard. i use exercises from other books- coroneos, terry lee, cambridge- when it comes to studying for exams. i think i did a few exercises from couchman too. Good Luck!
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