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hi in our esterification prac we had to use fused CaCl2 to dry the organic ester layer but i don't get how it dries it or what exactly it dries. coz if you put calcium chloride in your organic layer, aren't you contaminating it? even if you distill it, it'll still be there. or is it decanted...

alright thanks

holy shit at school they tell us that if we can get 70% of the 4u paper we'll be fine and i'm doing the course as we go along, not accelerated or nothing, though everyone else in my class is like up to i don't know mechanics or something at tutor i just need the marks in maths to make up for...

weak acid-strong base --- phenol strong acid-strong base --- bromo blue strong acid-weak base -- meth o so when we did prac titrating HCl and NaOH why did we use phenolphthalein instead of bromothymol blue? coz it's just easier to see colour transition from clear to salmon pink rather than...

oh whoops i just realised that the title doesn't have much to do with this post -- i only realised now i'm sorry this question to previous hsc students out there did 4 u maths: i just want to know if it's possible to get a 98 in 3u and 4u -- i don't want to aim too high (the lower you...

hip hop good rock, rapping, house and techno bad sometimes alternative is good rnb is the MOST awesome, and a lot of the underground is really good

k thanks heaps brother

why is the resultant pOH 7? do you like multiply it or add it or what?

i still don't understand you're not adding micrograms, you're just adding NaOH solution of really low concentration why doesn't the maths check out like from pH 7 to 1.6 just by adding base and not acid

bored seems to be running short of members right now i can't get my head around this ...either something i don't know or i've just removed the very brick that will cause the foundation of chemical chemistry to collapse in on itself...though i doubt the latter consider this problem: find...

hmm looks are part of it i always look at a guys hands - tells you almost everything about personal hygiene but nothing beats a sense of humour in a guy

haha asian girls don't shave coz they don't have body hair like seriously man it's wicked

haha though suicide is a serious matter maybe coz they can't stand people's bad breath no longer

hehe i don't know much bout politics but obama is mad (as in cool) he's half black, half white, perfect and anyone who doesn't love him is just weird/jealous/mad (as in uncool) and btw, some people really need to loosen up here, very passionate about politics

haha i don't think the truckie shifts are for me

okay forget med what about optometry that i'm actually interested in you see, i can't see very properly

better than working at maccas right

i'm talkin GP after being established i don't mind hospital duties man when i meant without doing anything, i meant as in studying hell if you made me lift weights i would, so long as i don't have to sit down and stare at pages of formulas or other stuff for example, lawyers they gotta make...

i don't gamble it's so stupid i'm not completely heartless though like after i earn i wanna give all excess money to charity coz i don't have anyone i need to look after i don't need a lotta money, i just don't wanna work in those second rate, third class, jobs for the rest of my life you know

i should be eligible at least i'm not a paedophile right? i hate biology (which is basically med), physics, commerces, i'm haven't practised any arts, so no talent there i like chem, i like maths (up to the 4unit level, so i don't wanna learn bout hypercubes or else my brain will sink into...