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I want to suggest a few more electives for a "new" new HSC chemistry. Just to make it more "relevant" than ever to society: 1. Terror and Terrorists: Discuss properties must chemicals have to be used as explosives. Identify chemical tests to qualitatively determine the type of explosive...

hahaha...and how do you reckon we should judge "smartness"?

I wrote "Developing Self" as my title. Wow...so original! I hope that won't drop me to band 5, just for repeating the title of the magazine...

Hahaha...is the first question meant to confuse ppl? Anyway, to compare two complex numbers, you compare either their moduli, or their arguments. You can't use inequality signs. Note that inequality signs only compare the moduli and arguments of real numbers anyway.

The markers will expect something from Galvani, Davy and Faraday, since these three are specifically mentioned in the syllabus. IMHO, Volta is just there to connect the ideas of Galvani, and their relevance to Davy's work. i.e. Volta identified that it was two metals in solution causing the...

I reckon the BOS is trying to "make the system work for everyone". That's why the tests are so bloody easy. It will make it seem like the HSC system is actually working... It's BS how the HSC has to make everyone happy, instead of doing their real job: separating from those who are good...

want to hear a load of crap? http://www.smh.com.au/articles/2002/11/08/1036308483351.html

nah, i dun think so... maybe the test WAS really easy

...and that "something" is usually something ridiculous...

I'd rather they make it harder, than make the time shorter. But, who cares now...!

What's the point of a test if everyone gets close to 100 anyway?

I felt cheated to begin with!

woops, sorry, 7 should be B a typo...

A B C A D C edit: B A D D B D C C A

You need more than HSC chemistry to figure the pH of ethanoic acid. All you need to know is that it's greater than pH 1.0

Yep

if g force = (g + a)/9.8 like it says in all the texts, if max g force isn't max downward acceleration, then ??

Yes, in fact it should be a dblarrow like this: <->

1 mole gas occupies 24.47L at SLC #moles H2 = 4.68/24.47 = whatever that is [OH-] = 2 * #H2 (from above equation) = 2 * 4.68/24.47 = whatever that is pH = 14 - (-log([OH-])) = whatever that is.

A In the equilibrium HNO2 -> H+ + NO2- Equilibrium lies to the left, because HNO2 is a weak acid. Thus, A is the answer