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\\$Q1. 4Fe_{(s)}+3O_{2(g)}\to 2Fe_{2}O_{3(s)} \\n_{Fe_{2}O_{3}}=\frac{m}{M}=\frac{5.00}{55.85\times 2+16\times 3}=\frac{1}{2}n_{Fe} \\m_{Fe}=nM=2\times \frac{5.00}{55.85\times 2+16\times 3}\times 55.85 \\\approx 3.50g \\\therefore$ Purity of Iron wire$=\frac{3.50}{3.58}\times 100 \\\approx 97.7...

lol that's alrite..

I know how to do the last one but I don't have time since I have to go somewhere now. So I'll type it up at night.

You need the period of B.

I thought he/she just wanted to share the paper with others.

based on how difficult I perceived my year 11 subjects to be: from hardest to easiest, Economics, Japanese Continuers, ESL, Physics, Chemistry, Maths Extension

Work and energy are, strictly speaking, a bit different. Basically, energy is used to do work. Work done is the result of application of energy. Hence, energy is more of an abstract concept - something that allows work to be done. Work is just what you can see in the end.

I only learnt very basic stuff before coming here. I.e. about how much people would learn if they do language continuers for their HSC. For this reason, I hated English and history (particularly textbooks that goes on and on about an event..) in year 9 and 10. Btw, my first language is Korean.

LOL.. I came to Australia about 3 and a half years ago. That's why. (To be elligible for ESL English, one will have to have stayed here for less than 5 years until the end of HSC year.)

Well, if exams become more difficult, everyone will find them hard anyway. So I think the difficulty of exams doesn't matter much.

ESL AOS: Belonging -Educating Rita by Wiley Russell -China Coin by Allan Baillie Module A: Elective: Australian Visions -Sea Change by Deb Cox I feel sorry for everyone doing standard or advanced or extension English (unless they actually like English). I only have 3 prescribed texts...

Normally not necessary. Go to tutoring only if you are dedicated to do extra work

\\$13) A is a point where the circle with the equation x^2 + y^2 = 16$ cuts the x-axis.$ \\\therefore A(\pm4,0) \\$The midpoint of any chord containing A: \\(2(cos\theta \pm 1),2sin\theta )$ as parametric equation of the circle is (4cos\theta,4sin\theta) \\x\mp 2=2cos\theta$ and $y=2sin\theta...

No. It's for the same reason as why c does not affect the value of definite integrals. Constants get eliminated since [c]=+c-c=0.

LOL at this

Same here. But funnily (and extraordinarily as it never happened before) in half yearly, two people got 100% and the third was 90% at my school.

Hmm... Well, they will have plenty of chance in the interview (if I get to have one) to assess my English skills so I guess it doesn't matter.

But do they get to know that i did ESL english? I hope not. It's unlikely that they can see what level of English I did unless UAC tells them.

how

You forgot to mention the holiday schedules. In Korea, there are dormitory tutoring colleges where students are forced to study the entire holiday living in the colleges.