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Recent content by Xainab

  1. X

    Edexcel GCE June 2013 Grade Boundaries Here!!!

    Too high for chemistry A2, especially 6B
  2. X

    How was Chemistry unit-5, 19/06/2013

    Wouldnt it be CH3CONHCH2CH2CH2CH3?
  3. X

    Edexcel Chemistry Unit 4 (12th June 2013). Revision and Post Exam Discussions.

    On amd more qs, why is it more correct to measure the ph of sodium ethandiote and not the acid?
  4. X

    Edexcel Chemistry Unit 4 (12th June 2013). Revision and Post Exam Discussions.

    And the mechanism was SN2, right?
  5. X

    Edexcel Chemistry Unit 4 (12th June 2013). Revision and Post Exam Discussions.

    The organic section was confusing too. What were steps 1 & 2 in stage 2?
  6. X

    AS Biology P1 MCQs Preparation Thread

    Yes, Yes, to measure observed length of diagrams and all.
  7. X

    *Biology Paper 5 tips*

    I want someone to clarify this too, please? Why dont we multiply the standard error by 2 in this case?
  8. X

    *Biology Paper 5 tips*

    PhyZac is right. You do multiply by 2, it says in my textbook too.
  9. X

    *Biology Paper 5 tips*

    Divide by root n.
  10. X

    *Biology Paper 5 tips*

    For standard deviation, its the same. For standard error, you multiply by 2
  11. X

    *Biology Paper 5 tips*

    Ok, thank youuu! Means alot
  12. X

    *Biology Paper 5 tips*

    Yes.
  13. X

    *Biology Paper 5 tips*

    And for error bars, do we have to multiply the standard error by 2 before drawing it on the graph?
  14. X

    *Biology Paper 5 tips*

    In some markschemes, however, it says to make mention of a named buffer solution :$
  15. X

    *Biology Paper 5 tips*

    Can anyone give me an example of a buffer solution commonly used in biology?
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