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hi, I'm going research on Al refining and need to know the cost of bauxite, or even better the overall monetary cost of Al refining from its ore and the overall monetary cost of Al recycling. Do any of you have any pointers about where I can find this information? I've googled and researched...

Ok thanks :)

Hi guys. Does anyone have any PRELIMINARY exam papers or know where I can find some? I'm after biology, chemistry, 2 unit and 3 unit maths. Thanks heaps in advance

So can an experiment have low reliability but still be valid due to the process used? If you have tested what you said you would test, but you haven't repeated it, is it still valid?

It does a little, thanks heaps for taking the time. Eeek, this stuff is like learning variables

NB: validity and reliability in chemistry

Can anyone explain to me the difference between validity and reliability please? I'm a little confused between them. Is it possible that an unreliable experiment be valid? How so? Thanks so much people, Take Care

what's this sport logbook thing? Never heard of it

Hey, are there any textbooks out there that have the syllabus dot point and then the corressponding notes? Looking for one for bio and chem.

Hi guys, Still chugging along. So far I have figured that fractional distillation and chemical separation (CO2 removal) can be used to separate the air. Are gaseous diffusion and gas centrifuge used for separation of gases from the air? There is heaps about uranium enrichment, but I can't...

Hi, I'm researching for a question which asked about ways that industry separate gases from the atmosphere. I think the only one is fractional distillation, as the other ones such as gas centrifuges only seem to be about uranium enrichment, of which the gases aren't frorm the atmosphere to...

Lol, I know. So what type of stuff do you put in the sandwich, I personally can't stand vegemite?

Hi, I've done the whole canteen thing at high school for over 3 years now, and I am sick of it! Waiting in line for second rate food is horrible, and now that I have a bad food allergy it really isn't an option anymore. So I'm wondering, what sort of food do you take to school for lunch and...

Really? But it's Saturday.

Yeah, 14 units is going to be a lot of work, and I intend on getting rid of 2 units if things are too much, and perhaps loosing another 2 at the start of year 12. It's hard though because I think I will enjoy most of them

Biology Chemistry Advanced English English Extension Maths 3 Unit French (continuers) Modern History

Hi, I'm not quite sure where to post this, but I think here might be ok. Anyway, I'm looking for a desk that is quite large for my bedroom. Table top area: approx 150cm x 79cm. $500-$700 I would like a proper wooden table, not with chipboard or with a cheap coating/surface material...

Apparently Excel for English isn't very good. I'm not sure if those types of books can help with English anyway. Get it if you can't find anything else, but surely there are better ones out there?

Cool, Keen, if you don't mind me asking, what's the Medicine course at Adelaide Uni like?

Well, yes and no. The problem with using mild antibiotics is that resistance is much more likely to occur, as bacteria are exposed to low doses which allow them to learn how to pump out the drug/change their cell walls etc. It really is a matter of balancing the two. I personally don't like kids...