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I'm no biologist, and it look as if the questions you asked is beyond HSC scope. However, I shall attempt to give a stab at the questions any way. steroid are hydrocarbons consisting of several cycloalkanes, which shares a basic structure. (See http://en.wikipedia.org/wiki/Steroid for the...

hi hi colin, how've you been? <3 @ZJ Ningning: Yes, I heard all of the songs you mentioned =) But SHE is not my favourite singers though. My fav is JJ Lin. SHE's songs are nice from time to time, too. And one of my best friends got me into steph, and she's nice too =D

Yea, I know who you are talking about. I didn't like him either. Alison Bird eh? She's been in USyd chem school for quite a while now IIRC.

Just a point on the safety side of the things. Sealing any reaction which evolve gases can be quite dangerous. As gas builds up and can (potentially) explode.

here's a hint: think swimming pool. think nursery. well two hints...

Renewability, to put simply, is if the material can be gathered, used, and then replenished by natural means. Ethanol can be renewable, as it's primary use is for combustion, which produces carbondioxide and water, which are used by photosynthesis to become glucose/sucrose, which can then...

oops my bad... i automatically linked reduction of water with shipwrecks you are right, reduction of water forms H2 gas.

templar's smart indeed... you thinking of doing chem honour next year templar? (hiding recruiting intention) free bump for ya

bah, picky

god.... tell me that's not me?

i think that's a prelim phys question.... energy or something.

2H2O + 4 e- + O2 ---> 4OH- ^ reduction of water.

all of those are quite classic! very humourous indeed.

DIE!!!! /opens up a bottle of 70% nitric acid

I'm almost on the same boat as you. I've been in Aust for 10 years... Mand is my first language. I think in English most of the time. Although been not a language person, I'm not good in either English or Mand.... Btw, I like SHE's super star as well.... and your DP, it's steph sun right?

wow, the legend lives... there's a thread way back, which even non chinese people troll on. But then it died.... I miss all those people on there.... oh btw, nice to meet ya all =)

let the sexual reproduction + mutation do the work... =p answer as mentioned before, error correction, correct representation of genetic material --> functioning multicellular organism.

since emf = - d phi/ dt and phi is a function of area as well. making the loop bigger can help as well... on a side note... is it me or are there alot of double posting these days?

Don't meant to be rude, but can you post the entire question? Answer can vary drastically with different wording of the question.

in uncle? sigh, it would be so much nicer if you were in uysd =/ I'm really impressed (and envious) of the knowledge you have displayed thus far. GJ