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Hey man, I had the same problem as you... the concept of the AC motor was kinda hard to understand. I found it easier to understand the ac motor visually. Hopefully these videos will help you understand it Squirrel Cage AC motor http://www.youtube.com/watch?v=3MbP4t920Is and Synchronous Three...

Re: CSSA Chemistry 2011 Gonna go beast in the externals!! needa own that to get a decent atar.

Re: CSSA Chemistry 2011 Daaaammmmmnnn dude!! just wrote about increasing yield, rate of reaction and how compromised conditions in an equilibrium can help maximise yield and rate of reaction.

you don't mind if I reply here right? Back EMF. The induced emf in a coil opposes the supplied emf within the coil. This happens because the rotating coil in a magnetic field experiences a change in flux thus inducing its own current/emf (Faraday's law- electromagnetic induction). Now this...

85%+ hopefully

Re: CSSA Chemistry 2011 I did sulfur trioxide which creates sulfuric acid when reacted with water

Re: CSSA Chemistry 2011 I wrote total water. which was i think 0.451 litres or something. So it said the amount needed to be added? dammit!! I was thinking of subtracting from the original. aarghhh!!! but I thought the question asked "the amount of diluted water" to change the...

Re: CSSA Chemistry 2011 completely left out the question on equilibrium in industrial chem... I was thinking of doing the co2 (aq) <-> co2 (aq) then talk about h2co3 equilibirum and also though of doing the haber process.. but I didnt cos we havent done the experiment. Just read the experiment...

Re: CSSA Chemistry 2011 Nope. well from riproots explanation.. I think h2so4 would produce less h+ thus less h+ concentration and greater pH than HCl. not entirely 100% on this one.

Re: CSSA Chemistry 2011 yup I got the logic behind it now... its cos it dissociates to H+ and HSO4- aye? fahh!!! silly mistakes.

Re: CSSA Chemistry 2011 hmmm sorry cant remember exactly what my answer was but yeah I subtracted one of the excess volume from the other as it neutralises and yeah divided it by the total volume. not quite sure what my answer was though. sorry

Re: CSSA Chemistry 2011 remind me what the question was. but yeah I think I kind remember..

Re: CSSA Chemistry 2011 sulfuric acide had more H in comparison with HCl however, its initial concentration was 0.25 thus sulfuric acid completely dissociates (strong acid) into 2 H+ ions. therefore, the concentration of H+ is 0.25 x 2 = 0.50 M This is the same as HCl as HCl dissociates...

Re: CSSA Chemistry 2011 that's what I meant by abstract questions where concepts must be understood and rote learning won't do you any good. and yeah I got Same ph and concentration

different to past cssa papers, needed to understand the concept behind it. hoping to get 85%+ hopefully

yup. tutoring's not that important if you wanna get good marks and ranks.

If anyone need any help, I'm more than happy to help you with any questions. and best of luck for everyone in year 11 and 12!

If anyone need any help, I'm more than happy to help you with any questions. and best of luck for everyone! Option topic: Astrophysics

Re: CSSA Chemistry 2011 lol yup did that too.. just changed it to 50000 litres in my previous post cos i found out 1m^3 = 1000L. but yeah got 35% and said that it was way too much compared to 0.06%