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lexi: 'sall good...becos it will be reactivated after the HSC, well at least according to MiNAi

not true...the bromine radical damages the ozone layer even more

ooohhhh....i see....thank you for clarifying that :)

w00t! I now have more posts than Yewon as a consequence of ruthless post deleting :)

you never know aye? whats the reverse of eutrophication? cos i have observed this effect numerous times at school... the area betwwen SBHS and SGHS (a.k.a. "the lowers") is a pleasant meadow in dry conditions but magically transforms into a lake overnight given appropriate conditions :)

sulphate is the OLD way of spelling it and u should not use it...in much the same way as we say "aluminium" instead of "aluminum" or "hydrochloric acid" instead of "muriatic acid" therefore...S-U-L-F-A-T-E

hehe excuse my ignorance as a non-prospective law stoodent...but what exactly does "torts" mean? I've heard it quite alot in legal circles.. also another question...why do we have QCs in Australia when the influence of royalty is virtually nonexistent?

yes and becomes land :p

ehheh what dog?

wrong!! just cos u repeat the experiment many times and get consistent results does not mean the resulats are sccurate...because the results could be consistently crap you know what I'm saying? wrong again...reliability is how consistent your results are...how well they answer the aim falls...

ehheh u thought wrong its only there to dissolve sulfate afaik but thanks anyhows :) by the way based on what you've seen so far what raw mark dya reckon we will need to get band 6 in maths ext 2 this yr?

mate trust me, 1 ad a half days to cram engo might not seem like alot but you should be able to get through your summary at least twice...good luck!

yeah i also have a question pertaining to this experiment...what is the purpose of adding HCl of a known concentration (according to MacMillan)? isn't is only meant to dissolve all of the fertiliser?

hmmm...an interesting proposal :)

its basically the same thing... you should note 1. provides an alternate pathway for the reaction to occur by lowering the AE, thus having greater propotion of reactants overcome this barrier... 2. provide a surface (if heterogenous) where molecules adsorb onto thereby weakening their...

the reaosn im asking these questions is cos i believe they are convered inadequately by resources and havent done experiments thoroughly in class, so help would be appreciated

hehe now that i have your attention. I would appreciate if you could tell me what u have written for the following: 1. Compare properties of gaseous forms of oxygen and the oxygen free radical 2. anal-yse the info available that indicates changes in atmospheric ozone conc. describe the...

will be there...hope to see you all 'swell :)

like frigid said, and still applies for engo, keep on reading thru ur sumamries till u are confident that you know most of it...then make a SUMMARY of your summary and read that... keep on refining your summary until you are left with only the stuff you don't know dont be like a shotgun and...

ohhh you're treading on thin ice refuting the statements of an ICho winner, but I'm inclined to agree with you since I don't undertsand this higher level Chem (therefore not relevant to syllabus)...