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  1. E

    HSC Chemistry Exam Solutions / Thoughts

    bruh that gives more incomplete combustion
  2. E

    HSC Chemistry Exam Solutions / Thoughts

    anyway guys let's make the most of today and start studying some physics oops I barely know anything from doing chem the past few weeks
  3. E

    HSC Chemistry Exam Solutions / Thoughts

    like I guess the esterification knowledge could still be partially used for the last question explaining the reaction conditions like I did but it was tad too overkill even for the 7 marker and the response felt really out of balance with the idk 2 pages of esterification thing
  4. E

    HSC Chemistry Exam Solutions / Thoughts

    and the other half the time we were trying to write practicals up in such a way as to get the "A" grade which barely any of us got in the end people in our class would profoundly relate to this
  5. E

    HSC Chemistry Exam Solutions / Thoughts

    not the person u asked but I attend one of those 2 listed schools and half the time we literally just did practicals
  6. E

    HSC Chemistry Exam Solutions / Thoughts

    ikr all those sodium stearates and sulfonate/ammonium heads and those nonionic thingos
  7. E

    HSC Chemistry Exam Solutions / Thoughts

    also where were the questions on soap/detergents, bioethanol and biodiesel or any of those polymers or any of those colours of precipitation reactions or flame tests or anything
  8. E

    HSC Chemistry Exam Solutions / Thoughts

    dw you'll def band 6, and soz if I caused any confusion
  9. E

    HSC Chemistry Exam Solutions / Thoughts

    it was probably 1 equation nvm
  10. E

    HSC Chemistry Exam Solutions / Thoughts

    oh well I was banking on them setting a Cycasin question today so that I could troll and draw the structural formula same xd
  11. E

    HSC Chemistry Exam Solutions / Thoughts

    I thought it wouldn't be a bad idea to add some more detail to my response while I was at it, but yeah they only really asked for one (or two? was that a different q?) equation/s
  12. E

    HSC Chemistry Exam Solutions / Thoughts

    like I used a lot of space to properly define the bronsted lowry theory (and all the acid and conjugate base stuff), had an example of both, used the NH4Cl as an example of a Bronsted Lowry reaction (which isn't arrhenius, thus generalising it) and also the disadvantages as per above (and of...
  13. E

    HSC Chemistry Exam Solutions / Thoughts

    yeah that and the sulfur trioxide reaction with calcium oxide
  14. E

    HSC Chemistry Exam Solutions / Thoughts

    I also did the quadratic formula method just to make sure the answer agrees with the "estimated" one (by a lot of decimal points), so probably no chance that will lose a mark (assuming of course you set out the quadratic equation properly idk) they'll probably be looking more to see if people...
  15. E

    HSC Chemistry Exam Solutions / Thoughts

    yeah whichever way around it was oops
  16. E

    HSC Chemistry Exam Solutions / Thoughts

    like ideally you would talk about both, like defining why the conductometric titration occurs (due to moving mobile charges etc) and explain why it's the shape it is (like u have ions in solution at first making good conductivity, then reduces due to neutralisation of hydronium and hydroxide...
  17. E

    HSC Chemistry Exam Solutions / Thoughts

    sup people for the aluminium hydroxide question, could we just assume the thing just dissociates completely into al3+ and OH-, because there's like no ksp value? also for the oxidation you could literally just put acidified dichromate which should turn the orange Cr2O7(2-) into green Cr(3+)
  18. E

    Mathematics Extension 1 Exam Predictions/Thoughts

    Basically, you realise that i) and ii) look quite similar, so you're tempted to take a "cos inverse" of i) to get some relationship of x_0 and x_0-a. However, obviously you can't do this without justification, but you can rigorise it as follows: u have cos(A)-cos(B)=-2sin(A+B /2)sin(A-B /2), and...
  19. E

    BoS Maths Trials 2019

    WOoOoWwowowoww someone GOT 80????!?!?!?! ok jokes aside, sup guys I'm "englishessayssuck" (mirroring my then-profound disdain for writing english essays like 3 years ago) and my student code for the bos trials was 3705 (so yeah I got the 80). Anyway so yeah I personally found the Bos trials...
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