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  1. O

    Yr 11 Chemistry... help!!!!!

    Thanks everybody!! it was due in a week or so ago... we got two weeks to do it :mad1: now ive got to write a speech about it in the holidays... ???!?!?!? I dont quite know what the speech has to be on but oh well...
  2. O

    Yr 11 Chemistry... help!!!!!

    thanks so much! I'll give it a go
  3. O

    Yr 11 Chemistry... help!!!!!

    Hey guys... I need serious help. Question: explain and evaluate how water's ability to absorb heat is used to measure energy changes in chemical reactions. I need to design a first-hand experiment to measure the change in temperature when substances dissolve in water and describe how you...
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