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  1. J

    Hsc Marathon 2009 - Chemistry

    firstly.. Fossil fuels may be used as fuels for combustion engines or to manufacture ethylene by fractional distillation and "cracking". Therefore it can be tranformed into many useful industrial and commercial products. Biomass, for example, cellulose... a main consituent of biomass, can be...
  2. J

    Hsc Marathon 2009 - Chemistry

    hey lets go again then... i'll get it started again!! ok what is a commercial radioisotope?!? how is it manufactured?!?!:jedi:
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