u'll find 2 trials papers here JRAH... 2002 and 2003 .. with solutions:
http://www.boredofstudies.org/mirror/2004/James%20Ruse%20Chemistry%20Trials/
and the 2004 CSSA + 2004 Independent paper ... both with solutions
http://www.boredofstudies.org/mirror/2004/
sorry that's all i could find