Recent content by NJMORTIMER

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    punctuated equilibrium.....

    Ah good question, Darwin's theory of evolution describes a gradual and slow change that occurs as a result of environmental change (causing natural selection); Punctuated equilibrium is simply a more 'jumpy' process where species will remain much the same for extended periods of time and then...
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    HSCya Later

    /cry :( I'm having serious withdrawals from school; I mean it felt euphoric to have the HSC finished but not school itself gone forever...
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    General thoughts- Extension 1 maths

    Aww, don't be. I'll get enough marks for all of us :D btw: this didn't boost my confidence as much as I would have imagined...
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    Multiple Choice

    1.d 2.b 3.a 4.c 5.b 6.b 7.d 8.d 9.d 10.a 11.b 12.a 13.c 14.c 15.d
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    Molar heat of combustion vs. Molecular weight.

    I don't think it would matter as long as you wrote the numbers along the x axis as *something* x 6.022x10^-23 But I didn't even do that, I just put the wrong units down *Edit* It turns our the units for molecular mass are 'u' Did anyone put this down as the units for the x axis? Did we even...
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    Molar heat of combustion vs. Molecular weight.

    This competition is over! You sir win the HSC! On an unrelated note, I got around the 1300 mark as well. Did anyone else accidentaly put the units on the graph as gmol^-1 instead of using the molecular mass units, dang I hope I don't lose too many marks for that...
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    General Thoughts - Chemistry

    Are you sure? I think it's not a buffer because it is not in the presence of a salt of it's conjugate base. All I talked about was it being amphiprotic and being a weak acid so it can safely be used in excess to clean up spills of unknown acidity/basicity...
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    Answers To Difficult Questions

    Catalysts can and often do involve themselves in chemical reactions (that is how they lower the activation energy, breaking bonds etc). The significant thing is that they are reformed in the end.
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    Answers To Difficult Questions

    Agreed, I think this is one of those cases where the simplest, most obvious answer is the correct answer. They showed the reforming of the chlorine radical for a reason and it fits with what the textbooks say (I've never seen it referred to as an initiator).
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    UNSW Medicine Interviews

    Hi all, I'm really hoping to get into medicine under the RSES at UNSW but it occured to me that I have not done any work experience in a clinic or hospital or practice! Will this likely hurt me in my interview and hurt my chances of getting in? Is all hope lost?
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    UMAT Results

    Woo! You just made me soo uber happy clockwise! Thanks! :lol: Anyone know how many people sit for umat on average each year?
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    UMAT Results

    I got s1: 60 (87) s2: 54 (74) s3: 68 (98) So that gives me a score of 182, but monash require like 220 for even an interview :(
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    Is this possible?

    Wow thanks heaps for that, good explanation, but there are a few things that don't make sense to me. How is it possible to have a weighted conical pendulum rise above horizontal (I can imagine a sudden increase in rev/min would 'swing' it above the horizontal but why would it stay there)? Also...
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    Is this possible?

    I got this question from my ext. 2 book and am having major problems seeing how to solve it. Q: "If the number of revolutions per minute of a conical pendulum is increased from 75 to 80, show that the rise in the level of the bob is approximately 19.2mm" It seems like some piece of information...
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    Getting in a year later?

    If you do it that way can you still get into the commonwealth supported places? Thanks for the reply!
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