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Not sure if this is correct but back when I did HSC, my tutor was a HSC marker and she said something about only 1 question in the exam being chosen for significant figure marking. So if it's that question they select which may be the case if it's 5 marks then you will lose a mark. If they don't...

Try to finish maybe the next module in all your subjects before going back to school. It's achievable and will also mean you have time to relax and enjoy

In terms of engineering degrees most people doing it don't have any experience prior to doing them unless they did engineering studies during the HSC. What is more important is do you have a decent ability in mathematics and physics, as those two subjects will be important for that type of...

Go to the uni open days when they happen and talk to the people who are doing that degree at the stalls. Reading the uni websites probably not going to give you that same level of indication about what the courses are like since the universities usually exaggerate things to sell people on doing...

Probably 2 in the writing the K constants of the two reactions and the final one One in the final answer being correct Two in the working and rearranging Probably should be a 4 mark question but you can't really give more working than that there, if the question doesn't require it

There's no limiting assumption like K is small. The solution was reached by multiplying Ka1 and Ka2 they gave, so none of those were individually calculated

Which question are you referring to?

2022 applicants: If your scholarship application is successful, you can expect to receive a conditional offer by around 17 December 2021. Unconditional offers will be issued on the same day as the release of ATARs, on 20 January 2022. Says this on the website...

If you are getting the 98+ ATAR or the 95+ ATAR they state on their website you shouldn't have too much of a problem getting 75% WAM. As that kind of ATAR proves a student is academically gifted. Uni is not so different from high school, the more effort you put and if you are decently...

I would say slightly easier. Because last year the 2019 exam was like pretty easy and then it probably came as a big shock for the 2020 students seeing that exam which was a big step up on the previous year. This one was a little bit easier I would say than the 2020

It can't be the propanoic acid. This is a polar substance with a short carbon chain and so therefore will be soluble in polar water That's why number 2 cannot be propanoic acid (disregarding the oxidation stuff) The hex-1-ene and hexane are the two ones that are insoluble in water as they are...

It's not explicitly a part of the syllabus. However, the question just asked to identify the compounds so you could've worked it out by elimination

Yeah good to see that the exam helped them

https://boredofstudies.org/threads/hsc-chemistry-2021-exam-solutions.398134/ For anyone looking for solutions here is my solutions to the exam

Yeah that last question honestly is actually very easy. But students who over analyse the question too much probably would've got stumped by it before even attempting it because it looks very complicated. Those students who just stuck to the basics such as soon as they see a K (equilibrium...

Solutions finished :D (bar the 33b which I will do). Hopefully these were useful to you after your exam. Keep in mind though the level of answer here may be higher than what is needed for a full mark since I am writing this from a perspective of someone who has tutored for 5 years and completed...

Yeah that was a bit odd they put that one in but I guess it's fair then since you can do it by elimination and they didn't ask for a reason. I think it would be problematic though if they asked to explain it and then I doubt 99% of students would know. Maybe a select few who did something like...

33) a) deltaG = deltaH - TdeltaS deltaH = -95 kJ/mol at 300 K TdeltaS = -80 kJ/mol at 300 K deltaG = -95 - (-80) deltag = -15 kJ/mol b) The deltaH for this reaction is negative and so therefore this reaction is exothermic (releases heat to the surroundings). The TdeltaS term is also less...

Short answer: 21) a) not the only possible answer - flammable substances as they are all fuels - address by keeping away open flames or ignition sources that may lead to a fire b) Flask 1: propanoic acid (polar so soluble in water and not able to oxidised) Flask 2: hex-1-ene (non-polar so...

Hi, here are my answers to this year's chemistry exam. I will post them progressively over today as I am not currently at home, so check back for updates later today. Comment by another user: just for convenience - this is the paper from the thread posted by @Life'sHard...