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All options are wrong.

15, 18, 20 Rock solid.

it's hard at uni but easy in high school since the level of maths is quite low in HSC physics.

Yeah, options scale a bit but it's typically 1-2 marks, at best.

It's beyond the syllabus - the same thing occurs for all carbon rings based on benzene. Basically, what actually happens is that the double bonds you see in the structure, the electron pair that makes the double bond can be passed on to the adjacent single bond. What you actually see is a...

I would imagine that there would be an exchange of zinc atoms. Some Zn2+ would deposit and be reduced while some on the metal will be oxidised.

If you don't like physics and computing, don't do it. You need both of those.

Pretty much what happened to me - if I had increased my English mark by like, 5, I would probably have gotten into the 98s (from 96.50).

Correct answer, 1 point to antheung!

I have lots of assignments to do...fun. This is like, the second hurdle of the semester - the first one was week 5/6. This one is twice as big, though.

I would say that it doesn't matter if you do (s) or (aq) for NaHCO3 because they would both exist. It's produced as (aq) before it becomes (s) but I'd say both are fine.

Gaseous because it's a vapour but it doesn't matter too much.

To me, it's not all about solving climate change by divesting but rather, showing that university doesn't support mining activities that have adverse effects on the environment. Being a university, it should have some vision and divesting is a good start to that. Plus, coal use is probably going...

From "your whinging..." till the end. Renewable energy has been shown to be pretty much as cost effective as coal and it's ignorant to say go get a science degree and make it more efficient. Fact is, the technology is easily good enough but misleading information prevails because the climate...

There are plenty of things that are profitable - not just coal. The post is a load of shit and the second half is scientifically ignorant.

You can use the existing thread.

You put it on at the end with the N to show that it's attached to the nitrogen atom.

I don't have a problem with it, to be honest. The things they did on campus were within reason. If they said the campus was closed like it actually was closed (on Facebook), i wouldnt agree with it but doing it on campus to make a point is fine. Sent from my Optimus 4X HD using Tapatalk

Chemistry isn't one of those subjects where you can completely forget year 11 content, you should revise it during the holidays.

If you know your work, MC is easy 20 marks. If you're struggling, you really need to clear up your understanding of the course.