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    Option: Industrial Chemistry

    Fair enough. Wouldn't hurt to mention it - althought I hope it doesnt hurt to not mention it :P
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    Answers To Difficult Questions

    Results of the model would be deduced from the observations of a constant *whatever you did with water or beads*
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    Answers To Difficult Questions

    Join the club :) Of course we will get marks. I will at least. I dont know about you, but if you put in the equations and calculations, of course youll get marks. The examiners WANT you to get marks, they are their to maximise your marks. They are examining you on what you know, not what you...
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    Answers To Difficult Questions

    Join the club :)
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    Option: Industrial Chemistry

    I didnt talk about synthetic detergents because I didnt know you could make them from Saponification - I thought it was only appropriate to talk about Soap and its structure. I could be wrong an miss out on a mark or two. I did however make reference to Soap is better than synthetic detergents...
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    Role of Chemist

    Oh man was that a weird one - genius when you read the solution, but I dont think I would have thought of that :)
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    Option: Industrial Chemistry

    Argh, the Hydrogen Sulfide question cost me a couple of marks. Can someone please give me a basic outline of what you was needed in the Saponifcation products question? Other than that, this year was too easy - but then again, maybe because it's so interesting!
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    Answers To Difficult Questions

    When you paint the beads with stripes you can get harmful paint on your skin, so wash with copious amounts of water - also, some paints may contain lead in it, which is toxic by all routes of exposure.
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    Radioisotope

    One thing I did notice in that exam, was the lack of Water quality management like Eutrophication/water management/BOD/DO. But I wasn't complaining :)
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    Radioisotope

    I used Tehnetium-99m and Sodium-24. I talked about how TC was made very briefly, and talked abut their properties etc and then wrote about hte consequences, and evaluated after every point i made on the impact on society. I also used a diagram for Sodium-24 in pipes. I then proceeded with the...
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    Answers To Difficult Questions

    Yes, that too. I think the keyword to look at for would have been MODELLING the equilibrium reaction - not actually doing it.
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    Answers To Difficult Questions

    For anyone asking about the industrial section and the modelling of an equilibrium reaction, I used black and white and striped beads....if any of you have DOT POINT, they use that experiment as an example....quite easy to remember actually.
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    Answers To Difficult Questions

    Was the combustion answer int he multiple choice water? I put Carbon Dioxide.
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    Answers To Difficult Questions

    It also says further into it , "The light source in the spectrophotometer is usually a hollow-cathode lamp of the element that is being measured. Thus if the concentration of copper in a water sample is to be determined, the lamp uses a copper cathode. This lamp generates wavelengths of light...
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    Answers To Difficult Questions

    Argh 14 was so vague. From Pathways, If WHITE light is passed through an atomic vapour at a suitably low temperature to prevent electron excitation, some WAVELENGTHS are selectively ABSORBED and dark lines appear in the spectrum produced. These dark lines correspond to the exact bright line...
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    Molar heat of combustion vs. Molecular weight.

    That still works :)
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    Q17

    Wasnt it a ONE marker? If so, I dont think they would penalise you.
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    Radioisotope

    I used another booklet and filled up around 2-3 more pages...........is that not allowed?
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    Section 1 - comprehnsion- answers- Discuss

    C) Hmm, I took a more conceptual approach to the question in that she contrasts time, setting, and tolerance/perspective of people. I guess my answer was intermittent with a few other technqiues you mentioned. E) Again, instead of the learning approach you took, I wrote that he came to realise...
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    Iran fined $2.65 billion for terrorism

    Alas, we have the Zionist's goal. A christian degrading Islam, and vice versa. What is going on in the world, is going on here. You are all hypocritical and narrow-minded. @WASUPDOG You raise some good points but you need to erify your sources and make sure what YOU say, does not contradict...
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