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re: HSC Chemistry Marathon Archive http://www.digipac.ca/chemical/mtom/contents/chapter3/chap3_7_3.htm how come here it works for solids aswell? I think it works for solids but DOESN'T affect it if the others are gases and you're dealing with pressure

re: HSC Chemistry Marathon Archive very nice, for 1a I would also mention that radioisotopes are radioactive ie emitting of ionizing radiation or particles 2a, wasn't Lavosier the guy who proposed acids contained oxygen? b) davy was acids contain replacable hydrogen (examples are correct) c) i...

re: HSC Chemistry Marathon Archive - high molecular weight [in order to minimise error] - constant mass over time when exposed to air [ie not hygroscopic] Question: 1) a) what is the difference between an isotope and a radioisotope? [1 mark] b) outline the advantages and disadvantages of an...

re: HSC Chemistry Marathon Archive it's c?

re: HSC Chemistry Marathon Archive hmm this is just the recommendation, it will depend on the solution (in the hsc they might put some random test and I guess it will depend on the colour change and which will be easier to detect)

re: HSC Chemistry Marathon Archive 1st thing in bold: polymerisation is the key word 2nd thing in bold: dehydration (bigger) 3rd thing in bold: ethene

re: HSC Chemistry Marathon Archive okay thanks for tips, what's the answer for b?

yup, they're relative to hydrogen

search up the raw mark database, somewhere on these forums (then just use a calculator) should probably repost this after phys and chem exams cause you never know (i heard they mark quite harshly in sciences in hsc)

their good raw marks if you get them, i'd say 96-97

re: HSC Chemistry Marathon Archive Question 1: a) discuss the reason why ethylene is considered carbon neutral (3 marks) b) write a balanced equation (with states) showing the process of the polymerisation of ethylene (1 mark) c) outline the steps of the polymerisation of ethylene (3 marks)...

re: HSC Chemistry Marathon Archive I haven't done ANY revision since trials :(, but I'll give this a go. (please correct my errors) Q1: a) a buffer solution consists of a weak acid and its conjugate base, a buffer is a solution that resists a change in pH to a certain extent. b) yes, it can...

Re: ATAR estimate. I have school and personal rank, assessment and estimated HSC mark okay, awesome haha I want to know the accuracy of my estimates :)

Re: ATAR estimate. I have school and personal rank, assessment and estimated HSC mark Looks good, I'd say 94-96

how many people in 2u, english and ipt?

I put: 1. A 2. B 3. C 4. C 5. A 6. B 7. B or D forgot 8. A 9. D (I had C but changed idk why) 10. D 11. A 12. B 13. B 14. B 15. B 16. D 17. A 18. C 19. C 20. C

hmm, you may be scraping it but I reckon you're in the 50-55 zone. [assuming standard english]

lel

i'd say 83-88, how come a 39 is second for physics, how far are you away from first? super tough exams?

80-85