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I am.

CHEM2912 Ease: 4 Despite getting an 89, this unit is HARD - it's easily the hardest chemistry unit so far and you want to be good at maths to do well in this. I'm okay with maths but I'm not great so I found it quite tough. Make sure you go to classes/find the ones with good lecturers and don't...

Well, considering nobody else will answer this, here's my answer. Basically, what happens is that some of the protons in solution (H+) gain electrons (is reduced) from the test metal (is oxidised) which produces a bit of hydrogen gas. Reduction: 2H++2e- --> H2 Oxidation: Metal --> Metal2++2e-...

That's bad science, if you ask me. In future, always look at everything. Are you going to tell us ALL of your results? Numbers/potentials, concentrations etc?

Why can't it be a research scientist?

Re: Why is an aluminium can better than a glass flask in a heat of combustion experim I understand your point but the light reflected would have a negligible effect because the error you get from heat loss is way more.

This one.

Out of the 6 chemistry topics I have (2 subjects - 3 topics each), only 1 has given solutions to past papers and only for 2 years...=/

I can.

OP got 20/20.

All HSC chemistry exams are straightforward. The cut-off will probably continue hovering at ~75.

True, I'd love to see someone talk about oxidation of ethanol in the body to acetaldehyde and acetic acid. Would be great.

I would award bonus marks for that. LOL.

What you just wrote is contradictory. If you use this formula: ΔG=ΔH-TΔS If ΔG is negative, it is spontaneous where ΔS is the change in entropy and ΔH is the change in enthalpy.

Yeah, just a heads up, don't do CHEM2403 - it's worse than CHEM2404.

I had one of those and it changed drastically.

You're almost guaranteed classes on 5 days if you are in science.

The MC should take 7-8 minutes. At least, that's how long I took and always got 19 or 20.

I don't think many of us can afford it...

Make sure you leave a space between a number and the units. It's funny how you lose marks in HSC for not mentioning your glassware - in uni and later on in a chemistry career, you are penalised for mentioning glassware.