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  1. O

    Chemistry: Post your doubts here!

    Thank you very much!
  2. O

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w10_qp_12.pdf Can someone help me in question 8,11 please?.
  3. O

    Chemistry: Post your doubts here!

    I have a question Paper 1 winter 2008 Q39 , i dont get how to do it : 39 During the bromination of methane, the free radical • 3 CH is generated and a possible terminating step of this reaction is the formation of C2H6 by the combination of two free radicals. What could be produced in a...
  4. O

    Chemistry: Post your doubts here!

    I think you had a question revolving flameability of Halogenoalkanes? did yuo
  5. O

    Chemistry: Post your doubts here!

    Yeah sorry x_x :3
  6. O

    Chemistry: Post your doubts here!

    yield = Actual yield/measured yield x100 right? we know there is 30 g of ethanoic acid so Measured yield = 30(98)/60 x100 = 45 , closest to 50 so answer is C
  7. O

    Chemistry: Post your doubts here!

    Can someone help me do Question 24 on the winter 2005 paper 1 question? , What the easiest way to approach this question? I got how to do it , but similar questions always come , Whats the deal with teritiary alcohols , can they only form 2 different alkenes or what?
  8. O

    IGCSE 2011 Oct/Nov Questtion Paper and Marking Scheme

    I need the 9701 Papers ( chemistry, Bio) for some reason the link you gave out wasn't working with me
  9. O

    Topical past papers

    Hello everyone , I need you help guys in locating Topical past papers for chemistry and biology (As) i've searched all over the net but with no luck , I would appreciate it if anybody could send me a link to a site containing these past papers or any relevant help . Thank you
  10. O

    E.N ramsden book pls

    I downloaded it from a site , but when i printed it , i found out its incomplete can someone please upload it online?
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