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carbonate can lead to pH imbalance in the environment, and therefore may require monitoring too.

Quite true. If you ever need to find the conc. of a weak acid, use a strong base to titrate against it. Vice versa with weak base.

ADV: no mechanical contact, less wear and tare cost DISADV: radiation source can endanger worker's health

i suppose increasing salt conc reduces o2 conc. Since O2 is essential for corrosion to occur, this would probably explain why you are seeing less corrosion with high salt conc.

one of the things you could talk about is that for covalent molecule, the model suggests that the electrons forms a solid, rigid bond. Whilst it is true to a certain extend, electrons do move. This mobility is not captured by this form of modelling.

hmmm because there are air in the PS?

QFT

^ Tad lazy. IMO, 1st year is easiest of all years in university. As long as you try hard, and do your HW, you will get a decent mark.

You often find statistics useful in the most unbelievable places. Even I've only done 2nd year 1st sem stat, a few friends of mine asked me to help them with their Honour project with my limited stat knowledge. Your knowledge in stat can be especially useful if you will do some hypothesis...

Natural selection is always an easy pick. Get 20x green toothpicks, 20x red toothpicks, randomly chuck em in a lawn, get a predator (a friend, who's not green/red colourblind) and get him to pick out as many preys (tooth picks) as possible in 5 min.

Re: ^ Because the water molecule exist as 5 distinct water molecules. Written as H10O5 would imply a huge molecule containing 5 oxygens and 10 hydrogen.

JJ Lin is my favourite. JChou is not bad, SHE and Steph are nice.

@Stazi: tell me one person who's not saying int'l students are unapproachable, unsociable? Also, you are the one proclaiming that generalisation is unavoidable. Yes I did generalise. For that, I apologise. @Nebu: 1) I would like you to know that most int'l students also work, which...

Sorry for the misunderstanding. You have my HSC and 1st year physics knowledge completely stomped. I'll have to say that I'm not familiar at all with the concept of event horizon (if I did not already).

You are correct undalay... However, if you will be doing shipwrecks, you might as well know it... since you will need to sooner or later.

I would stick in an example just for the sake of it. @ambition: I would replace or reword your last sentence, to something which munchi said. Your wording is slightly ambiguous I think.... You can say "the two functional groups react to emit a small molecule", IMO would sound better.

@Stazi, I guess we came to a common conclusion that regardless of ethnic background, appearance etc etc etc, there are a lot more to the population than the stereotypical type of the population. I only wanted to point out this fact, instead of every one on board bitching about how *all* terrible...

edited out ---- didn't read properly Yes, building accessibility are incorporated into your student card these days.

@Stazi Edited in: Additionally, I find it puzzling that you are putting forward the argument that, by appearing a nerd makes you less sociable. Though I was, like all non-sociable stereotypical asians, shy and closed to myself, I am able to interact despite the facade of nerdiness. And I...

I think the step you mentioned is to further remove any prescense of barium chloride, which might be trapped in the precipitate. Something non-related: Wow, old thread. *tsk *tsk @ tennile. Good o' HSC eh.