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    HSC 1987 paper

    Mind posting the questions and so we could do it for u?
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    2005 Mathematics CSSA Trial

    Do you happen to be studying in the Australian International School of HK??
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    Biology CSSA past papers

    Does anyone have biology CSSA Past papers and worked solutions?? Please post them up if you have them ... Thx in advance!
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    2004 CSSA solutions

    COol ... THX that's greatly appreciated.. it's hard to check my work right now for those qs im uncertain abt.. thx ;)
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    2004 CSSA solutions

    Hi, sorry was away.. Well as i have only done 3-4, so far :P i reckon the Area of triangle PAC is 16, but since someone else said it's 6.... maybe im just wrong, and in question 4b) iii) i think it shud be -12x^2 - 12x -3 = 0. just missed an x out... Another thing im not sure if it's...
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    2004 CSSA solutions

    Acmillan, not to insult u or anything, but i think maybe coz you were doing ans for Qs 3-6, there's quite some careless mistakes in there...
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    2004 CSSA solutions

    acmillian.... just wonderin.. for question 3 c) v) .... is ur solution wrong?? i think it's 16 isn't it... if not can u explain ur answer? thx
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    Diagrams

    Well, it's safer to just do it... in case ! :D
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    2004 CSSA Trial Paper ... Mistake?

    Hi, thx for the effort... but i don't get what formula you used for part 4.. You didn't use n = CV .... how come urs is like n = V / something :O ?? Looking forward to ur reply... exams later today :P Thx in advance! -- is there like anything on this in the chemistry context...
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    2004 CSSA Trial Paper ... Mistake?

    Yea... exactly, that's why i dunno how to do it :P But in da exam are we allowed to bring in a mole calculator or wuteva u said??
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    2004 CSSA Trial Paper ... Mistake?

    can't we just use V = n/C ?
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    2004 CSSA Trial Paper ... Mistake?

    no.. are u saying that n = 24.97? i thought u said n= m/M .'. n(S) = 10^7 / 32.06 = 311915.16 is right tho :S
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    2004 CSSA Trial Paper ... Mistake?

    - "where did u get ur 24.79?" anyway keep on going..... what i would do is: n=CV but... we are trying to find V... and C is unknown... so.. am i supposed to do something else first?
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    2004 CSSA Trial Paper ... Mistake?

    I dun realli get what u did but is this right?? Mass of S: 0.1% x 10^7 = 10 000kg = 10^7 grams M(S) = 32.06 n= m/M .'. n(S) = 10^7 / 32.06 = 311915.16 ... hmm i got a feeling im wrong..
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    2004 CSSA Trial Paper ... Mistake?

    lol yea... it's just me... hehe, well spotted. Anyways, would anyone mind posted on the correct answers as well?
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    2004 CSSA Trial Paper ... Mistake?

    Cool... thx ;)
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    2004 CSSA Trial Paper ... Mistake?

    Has anyone done the 2004 CSSA HSC Trial papers?? I was just wondering for question 23... "Coal, containing 0.1% sulfur, is burned in a power station. Calculate the volume of sulfur dioxide released at 25 degrees Celsius and 100kPa when 10.0 million kg of coal is burned." Supposedly, to...
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    Binomial Theorum

    (x+2)^8 T_(r+1) = 8 C_r x^(8-r). 2^r T_r = 8 C_(r-1) x^(9-r) . 2^(r-1) Let C_r, and C_(r-1) be the coefficients of the terms.... then [C_(r+1)]/ C_r = [8 C-r 2^r] / 8 C_(r-1) 2^(r-1) = (18-2r)/r C_(r+1) >= C_r if 18 - 2r >= r 18 >= 3r...
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    Trig - General Solutions (help needed)

    :S im lost with that.... do u think u cud explain it more?
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    Whose EAS application was accepted n where

    Why wouldn't people want to be qualified for it!!?? What is this long term disadvantage are u referring to anyways?? And also if anyone can pls tell me... what are the disadvantages in applying for EAS?
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