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  1. S

    Chemistry CSSA Trial Difficulty

    Hi guys Which questions did you find most difficult in the exam?
  2. S

    Water Quality Question Please Help!!

    Hi, can someone please help me with this question regarding the results in the table: Assess the health of the waterway in terms of Biochemical Oxygen Demand (BOD). Thanks for any help!
  3. S

    Condensation polymer question!! Please help!!

    Hi can someone please explain to me how to do this question? Thanks,
  4. S

    Water Chem Question

    Hi, Can someone please help me answer this question: Explain the effect of temperature and ion concentration on the solubility of substances. Thanks for the help all.
  5. S

    Chemistry question - metals

    Hello, can someone please answer this question: Discuss the suitability of a highly reactive metal as a rain storage water tank. Thanks for the help everyone :)
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