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Also the polarity and shape video describes the effect of highly electronegative F in HF as increasing the electron density around the hydrogen. hmmm...

Oh, and that was a nice covert bump there.

Though VSPER works as an acronym, it isn't its proper name. Your link and movie name are incorrectly named ~ and we wouldn't want to confuse people. Also, how can you illustrate VSEPR theory without mentioning lone pairs? A: Not very well I am guessing.

Chemistry is not to be taken lightly. It isn't like the concepts are thrown out the window after yr11. Everything you learn in chemistry is built up from. While I can't actively remember anything I learnt in year 11, I can say the same about every year of school so far. I don't think you'll...

I = ∫ (sin x) dx / sqrt (2-cos2(x)) let; u = cos x du = - sin x dx I = - ∫ du / sqrt (2-u2) = arccos(cos(x)/rt2) + C

I think you are confused; ∫f'(x)dx/sqrt(a2 - f(x)2) consider f(x) = x , f'(x) = 1; ∫dx/sqrt(a2 - x2) I don't mean to be condecending btw. It is just the use of a substitution. My uni tables use x rather than f(x). Or if you prefer; I = ∫f'(x)dx/sqrt(a2 - f(x)2) let...

Oh and this one is obvious, but is worth a post. Molar is another unit for concentration which is equivelent to moles/litre. So 15M HCl is '15 molar HCl' which is the same as 15 mol.L-1 HCl It is analogous of; hertz or per seconds. pascals or newtons per metre squared. siemens or...

Would anyone dispute; Shipwrecks +---> Electrochemisty Industrial +---> Chemical Engineering Forensic +---> Analytical chemistry Chem of Art +---> Inorganic chemistry I only have a vague notion of what they are about. Chem of art sounds like it'd be the most useful going into university...

I haven't done the elective, but lots of HSC chemistry is an super simplification. Are you refering to quantum numbers. I suppose you are doing atomic orbital theory then. SPIN A HALF!

Well don't think you are alone. If you have questions I'll try to answer them, they should all relate back to inorganic chemistry. Exam this Wednesday

Yes, it is a hell of a lot more evil next semester. Don't know how I got through. Biochem? Two friends of mine won't shut up about how easy it is. Didn't five people get full marks in the mid-session... perhaps it is a different biochem.

Whoa! Sorry dude. You know a electochemical reaction is spontaneous if the net potential (E0) is positive. However, under electrolysis you are applying a voltage, so that if the applied potential is strong enough (such that E0 becomes positive) the reaction becomes spontaneous. Remember the...

I don't think you quite understand the purpose of this forum. Google is much more efficient than us mere mortals and gratifies in under a second.

Oh, ok, thought it might have been a bit more exciting. Sounds reasonable. Last titration I did was 6 hours of fun! Only 18 seperate chemicals on 12 pages of method :p I wouldn't worry about breaking a beaker ... they are perhaps the most innacurate and inprecise peices of glassware around...

Nice try, though you should say; Amount of substance (n, mol) = mass of sample (m, g) / molar mass (M, g/mol) Since moles is the SI unit of amount of substance and weight is the force applied to a mass by a 'gravitational field'.

Like how often do hard disks fail ... ... [deep rumbling from Pete's computer] :o

I bought a DSE 256MB one for $48.

I am interested to know what the titrations were etc. and how much time was allowed. Mainly because even if EVERYONE in chemistry did the titration comp. we still wouldn't have enough for a team ~ let alone a decent one.

Yeah they were running it at the UNSW SoChem FY labs today. You know what that means; you probably get stuck with some trollop first-year's burette; who has mysteriously managed to grow a silica garden in the nozzle ... or thought is would be interesting to poke into an acetylene flame! But...

I didn't think chem fy was that hard compared to phys:mad:. Second session I thought was a bitch. Though I don't know first hand for CHEM1011 or if you have any chem in your background. Who was/were your lecturers? I pity you if you had Dr. Lamb ~ he is funny and does lots of research, but...