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re: HSC Chemistry Marathon Archive m9 stop doubting yourself, you're gonna smash the HSC! If anyone should be having doubts I honestly think that it should be me, especially after my poor performance in the last set of exams (I got too complacent after half-yearlies) Yeah chem and phys tend...

Re: HSC 2015 3U Marathon Thanks for clarifying! I was just curious as to whether there were quicker methods or not (It's still a relatively quick method though)

re: HSC Chemistry Marathon Archive Here's the equation for that prac

re: HSC Chemistry Marathon Archive Don't give up just yet man Keep going at it and you'll have a solid chance at band 6'ing them! huehuehue

re: HSC Chemistry Marathon Archive Here's my practical report on this if anyone needs information: 5.1 Preparation of an Ester Aim: To prepare an ester using reflux. Equipment: • Reaction Flask • Boiling Chips • Condenser With Water Hoses • Heating Mantle • Separating Funnel With...

re: HSC Chemistry Marathon Archive Yeah if leehuan had more depth and specificity with his answer I could see him getting those 7 marks :) No Worries :D

My apologies for making that comment Fiction seemed pissed off because she thought that we weren't friends of yours and then felt the need to back you up over teridax's comment I felt as if letting her know that we were friends would make her less aggressive in that we were joking around in...

re: HSC Chemistry Marathon Archive Since it decays to emit gamma radiation this can basically be picked up by a gamma camera and shown on a screen.

re: HSC Chemistry Marathon Archive "What do you mean by this?" I think he's referring to Technitium-99m being used as a radio-pharmaceutical - It can label certain molecules in the body such as iodine and it then accumulates in the thyroid gland. Through using PET this can be viewed through...

re: HSC Chemistry Marathon Archive For A you want to find the equation where it is not an oxidising agent or reducing agent So you immediately draw to the conclusion that it is not involved in the reaction Drawing the net ionic equation for all three and see where water is eliminated (as it...

re: HSC Chemistry Marathon Archive It's not that long for a 7 marks Your response had a good structure :) A lot of people tend to leave out a final/overall evaluation statement, but you included it :tennisclap: However, I do believe you are lacking in information for the first paragraph...

Re: HSC 2015 3U Marathon Differentiate y = x^1/2 using first principles I've done questions similar to these and I find that the only way to approach it is by rationalising the numerator (Once I've inserted everything into the first principles formula) Can somebody confirm if there are any...

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread You can I was taught this way though ~ (I can do all the algebra in my head but I posted it for OP's sake)

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Also don't forget the asymptote at x = 0 !!! As for the stationary points Stationary points when dy/dx = 0 y' = 2x - (2 / x^3) 0 = 2x - (2 / x^3) Multiply both sides by x^3 0 = 2x^4 - 2 Factorise 0 = 2(x^4 - 1) 0...

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread Put it under a common denominator y = (x^4 + 1) / x^2 Like you would find the vertical asymptote, take the limit of x approaches infinity of the above equation In these situations when there's a pronumeral in the denominator...

How did it let you submit it without filling out important information like that O.o ?

m9 would you care to add to this good stuff? In regards to trial preparation specifically?

https://9eeba4054ee764a743f35bb25b5f907e66151207.googledrive.com/host/0ByEFYhkkDQBKUmxzb0Q4MEswQ3c/Year%2012%20-%20HSC/

https://9eeba4054ee764a743f35bb25b5f907e66151207.googledrive.com/host/0ByEFYhkkDQBKUmxzb0Q4MEswQ3c/Year%2012%20-%20HSC/

I don't think many people in year 8/10 use this website, unless there are of course people that have siblings those grades I think you're better off printing an advertisement and putting it somewhere in your school library or even local library if you can get the permission of the librarians :)