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    Extension 2 investigation assessment

    I’m sorry but DS isn’t sharing any work until he finishes his HSC. I posted just to give an idea to consider, I realise now you may have been looking for students who’ve already finished Extn 2.
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    Choosing between two degrees: Echocardiography or Paramedicine

    I try to refrain from giving career advice on forums since we know little to nothing about each other, so these are just general points to consider: CQU website seem to be quite explicit in their advice that students should be personally & financially prepared to move interstate for clinical...
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    Solids and liquids in equilibrium constant

    Their changes in mass per volume as a response to changes to other conditions within the system are negligible, so for simplification are ignored.
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    HSC Biology

    I understood that the prerequisite to study maths Ext 2 in Yr 11 is completion of Preliminary extension maths in Yr 10 (or earlier), not Adv maths or Ext 1, which can be studied concurrently with Ext 2 (probably doesn’t belong in a Bio thread, but OP has asked & so should be advised of her options).
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    Medical Science

    My apologies. I actually only skim read it as Mindspot Clinic for mental health as I scrolled down which I realise now is my mistake (I wouldn’t have provided the link if I’d been trying to mislead students). I realise it’s alphabetical, but it’s strange that the webpage should list an Indian...
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    I'm a civil engineer. Ask me anything you want to know about Civil Eng.

    Traffic controllers often work outside standard business hours (like 10pm to 5am) when traffic is light, so they get loading for these ‘out of hours’ shifts. However, their salary award scales probably don’t include much increase with each of year of experience, whereas graduate engineers can...
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    I'm a civil engineer. Ask me anything you want to know about Civil Eng.

    Since this thread has been revived, it is interesting to note that OP described his graduate starting salary as $66K and calculated that with indexation rate of 2.5%, in 2018, the equivalent should have been $78K. In reality, last year (2020), graduate salaries for civil engineers was $60-65K...
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    Medical Science

    Also note that MQ’s website (https://www.mq.edu.au/about/about-the-university/faculties-and-departments/medicine-and-health-sciences/macquarie-md/clinical-placements) lists its clinical schools/teaching hospitals as Hyderabad, India and Royal North Shore Hospital. Since RNS already has a...
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    How to Study Well

    It’s not. Private & selective schools have an advantage over public nonselective schools in this way. It’s terribly unfair. My eldest ended up studying a load of 15 units in her last year because she wasn’t allowed to accelerate at all. She did manage to get all band 6s & E4s so she ended up...
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    Chemical nature of genes & chromosomes

    @Hikeydropout, I’ve created this thread to post my response to this question which you asked in the thread that was accidentally deleted. I looked up the HSC syllabus details for this topic which NESA provides in the public domain and can’t say that they are very helpful about what students...
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    Medicine 😎

    The UNSW course is very well organised but for some people, one of the pros of studying at UoN or WSU might be that they are five year courses vs UNSW’s six year course. Financial background might be a factor for some.
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    Help!!

    I strongly suggest this web page for a review of the different types of intramolecular bonds and intermolecular forces. https://sites.duke.edu/thepepproject/module-2-drug-testing-a-hair-brained-idea/teacher-notes-chemical-bonds-and-forces/ The intermolecular force between the sucrose molecules...
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    Help!!

    I’m not sure about the term ‘bind’ with other sugar molecules. The sucrose molecules are attracted to each other and held together by intermolecular forces. This web page provides an illustration and a brief explanation. https://rotsartlinearglucose.weebly.com/intermolecular-forces.html
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    Help!!

    Sucrose (common table sugar which is a disaccharide of glucose and fructose) is a weakly polar molecule (even though it is not ionic), so sucrose molecules are attracted to each other and held together by intermolecular forces.
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    Help!!

    Yes, crystallisation of the sugar does separate it from the water so it is the intention of the exercise. If you don’t need the water, condensation is unnecessary. (Sorry, I’ve only just read the original post - I was replying to your post later in the thread.)
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    Help!!

    You can separate sugar & water by distillation which involves evaporation then condensation of the water. There are YouTube videos with demonstrations. A previous poster was correct to advise that it will turn into caramel if the temperature is too hot. Water boils at 100 deg C and sugar...
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    how are ions atomised in a flame test???

    Well, this has turned out to be an interesting thread in the area of chemistry physics which I haven’t thought about for several decades. Thanks. I think it is noteworthy that many of the well accepted textbooks for secondary school chemistry teach that the colour from the flame tests are from...
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    how are ions atomised in a flame test???

    Crossed posts. Spectroscopy has shown C3H3+, H3O+, CHO+ species downstream of unseeded flames suggesting that the hydrocarbons from the fuel source and their oxidised products are species that have given up electrons.
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    how are ions atomised in a flame test???

    “For a flame test with sodium chloride, the question that @dumNerd asks is, for me, critical... if sodium chloride were somehow producing uncharged sodium atoms in a flame test, where is the electron coming from to reduce the sodium cation?” I understand that spectroscopy has shown C3H3+, H3O+...
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    how are ions atomised in a flame test???

    “that does not mean that excitations can't be 2p to 3s to 3p and reverse, to give the flame colour, with an alternative being a 2p to 3d excitation with a 3d to 3p to 3s to 2p relaxation pathway.” Do you have the specifications on the energy required to excite a 2p electron to the 3d orbit level?
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