Search results

Looks like I'm a little late and missed out on the fun already. :( Hi, Survivor39! :) (If you still remember me. :p) Hmm... the weird thing is that I'm visiting Cambridge this Friday o_O. That would be Prof. Bishop, and I completely agree with you on all accounts.. :p That is true. :)...

If you are thinking of finishing undergrad then get a job immediately after that then consider this scenario: Suppose there are two of the same person who are equally intelligent with equal opportunities. One of them graduated at Uni A, which is ranked higher in engineering; the other...

For future reference. 20 and 30 are actually ambiguous. The significant figures of numbers without a decimal point and has trailing zeros typically depends on the context. Since this is titration you would expect the error in volume to be roughly 0.02-0.04 mL. Usually for questions like...

I think you have answered the question there yourself. :) Suppose temperature and pressure are the only factors that we care about in terms of gas solubility: Temperature variation with depth is mainly due absorption of the energy from sunlight, and this decreases with increasing depth...

Ah. That sounds like a syllabus disaster to me. I just wish that they would stop hiring idiots and/or politicians to write the syllabus and exam questions... I bet someone on the board thought that high school students must know about biopolymers because they themselves specialise in...

You are absolutely correct that yeast is a living organism! :) What I was being pedantic about earlier (and apparently still am :p) is that a living organism does not necessarily have to be an animal, although the reverse is true, as animals are a subclass of living organisms. Yeast is a...

I know what you mean. :) Wiki is actually pretty good though even though everyone can edit it. They did some studies on general and specific things regarding Wiki and how it compares to other encyclopedia sources - it's actually about the same if not better. :) I had a quick look just how...

I'm sure you already know how to do this so I'm not going to go into the calculation in details but only the bits that are important. :) nHCl = 0.1000 mol.L-1 x 0.0244 L = 2.44 x 10-3 mol Assuming that the neutralisation has a 1:1 ratio for HCl:NaX (which is why this question was so poorly...

That sounds reasonable to me. :) To be honest though, I honestly don't think you need to that kind of detail for the HSC. The people who designed the syllabus are non-chemists so naturally the marking guide won't award any marks for scientific discussion. Okay. :p Seriously though, read the...

Drop out of school.

In a sense, yes, you are right. :) Assuming that you are familiar with the idea of polymer - you can think of cyclodextrin as a cyclic polymer, if that makes it any easier. The way you read the structure that you posted is that there are however many glucose monomer units (n units) connected...

If I remember correctly, back when I did it my chemistry teacher gave the class some newspaper articles about using ethanol as a bio-fuel. That was not long after the time when they have started adding ethanol to petrol. Two things you could do - look things up on SMH, also just look around...

Since the other part of your question was not answered (why some aren't soluble) I thought I might expand on it a little. :) (I'm clearly bored and procrastinating from... things.) Polarity, as you mentioned, is a fairly decent indication of what a solvent can or cannot solubilise. As Clinton...

Apologies! That was silly of me... It's been edited in now. :)

o:

But... I'm pretty sure that yeast is a single-cell eukaryote, which means that it's strictly not an animal. :p

Right, first of all, you need to get your equation right and balanced. Given that you get CO2 and C2H5OH from C6H12O6, you write: C6H12O6 ----> C2H5OH + CO2 Balancing this gives: C6H12O6 ----> 2C2H5OH + 2CO2 Keep this in mind - almost all yield calculations involve converting things into...

Mm :o It'd help if you're more specific about it :) Unless it's a case where this is a last-minute catch-up on prac (meaning that you don't have a decent lab book). A lot of experiments in the Shipwracks, from memory, are only qualitative (such as the rate of corrosion one). The quantative...

Lol ^^ Xiaoie, I've always been hanging around the Chemistry forum on BoS o.O And.. You piccie is still the same as four years ago ^^;

Lol! That is so true :p In fact, apart from ii), v) and vi) are probably the best answers in this entire thread ^^; No offense to the original poster - but, this is really not a very good HSC chemistry question. I'm sure they're looking for answers like i), ii) and iii) but in reality those...