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  1. S

    June 2011 papers + mark scheme here!!!

    The mark scheme says the calculations - but the trouble is, I don't know WHY they are using those calculations! More specifically, question (d) is what i'm struggling with. I get part (i) and the simple Concentration = No. Mol/Volume, but for the next three parts I have no clue!
  2. S

    June 2011 papers + mark scheme here!!!

    The mark scheme says the calculations - but the trouble is, I don't know WHY they are using those calculations! More specifically, question (d) is what i'm struggling with. I get part (i) and the simple Concentration = No. Mol/Volume, but for the next three parts I have no clue!
  3. S

    June 2011 papers + mark scheme here!!!

    Will someone explain Q.8 for the Chemistry 2C paper - I really don't get it...
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