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Not me. Been waiting for the exam for a long time :rofl: However, I'm quite inconfident with chemical monitoring and management :eek:

lol that took me 2 attempts, but i got it xD

Photoelectric effect liberates electrons from the n-type semiconductor layer and it flows to the p-type and into an external circuit, and back to the n-type layer. The flow of electrons means a conventional current is made in the other direction.

Eheh I like this one.

Describe the roles of a certain chemist, and explain some methods which they use in their occupation.

No.

True. At the time they were initially measured, both strong/weak acid had the same amount of H3O +. But the amount of H3O+ in HCl is already the maximum, right from the start, since it's complete ionisation. However, for CH3COOH, there were molecules of CH3COOH that remain undissociated. So...

This. From what I hope I interpreted, you're doing pretty well.

Any reason why you're picking up 3u english if you know you're going to drop it in year 12?

Re: [-- Official 2008 HSC Chemistry Pre-exam Study Thread --] Woot, I'm doing this question only because it takes less than 1 minute to do xD NaOH(aq) + HCl(aq) --> NaCl(aq) + H2O(aq) Molar ratio: 1:1 --> 1:1 moles of HCl present = 0.05 x 0.2 = 0.01 mol moles of NaOH added = 0.02 x 0.01 =...

Only gases and aqueous solutions count. Do not count any without a concentration possible, ie. no such thing as concentration of Cu in Cu, nor concentration of Hg in Hg

xD Glad you took no offence. It'd be infinitely worse to write the wrong thing on the exam day than on the forum, right? xD Not many people come here anymore though =\ so I guess that's why it's always me.

Re: [-- Official 2008 HSC Chemistry Pre-exam Study Thread --] I think liamh's equation is the correct one which demonstrates the decomposition of ClO. That's what Conquering Chemistry says anyway. I don't know if other textbooks say different or same things.

o.o No, I've got nothing against you =O I just tend to correct whatever I see as wrong =\ You're a cool guy xD

No, I didn't do that, but I wish I had.

I don't really understand your question, sorry.

Wow, you're a prodigy =OOOOO IQ.....~130?

Depends what you want to achieve. If you're aiming at 97+ UAI, it's certainly not enough.

Not necessarily. At room temperature (25oC), when n≥5, CH3(CH2)nCH3 is liquid, and for straight chained alkenes, n≥2 makes CH2=CH(CH2)nCH3 liquid. So, technically pentane/pentene are both liquids at room temperature, but they are more volatile, thus they still vapourise, which could cause...

Haha. I've found many dumb questions in CSSA chemistry. Even worse in NSW Independent lol