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  1. Haya Ahmed

    Chemistry: Post your doubts here!

    People I need someone to tell me the reaction of Al with Cl what happens without heating and with heating and the states of the products .. Thanks :)
  2. Haya Ahmed

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s13_qp_21.pdf Q5 (a) ... (C) part .. why the aldehyde is converted to CH2OH .. and Is that because we added Hydrogen so Hydrogenation process happened ?!
  3. Haya Ahmed

    Chemistry: Post your doubts here!

    LOL of course :D .. I'm not that lazy to check ms ! :D
  4. Haya Ahmed

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s13_qp_21.pdf Q3 i ii iv v
  5. Haya Ahmed

    Chemistry: Post your doubts here!

    Ohh thanks how stupid was that ! :/ .. .anyways Is it okay to draw the displayed formulae instead of the structure formulae in the exam ? or we should stick to structural formula as asked ? and will they reduce marks or what ?!
  6. Haya Ahmed

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s13_qp_21.pdf Q3 c (i) why there is 2 lone pairs around the Cl .. isn't it supposed to be 1 lone pair only to complete the 8 electrons in the valence shell ?!
  7. Haya Ahmed

    Chemistry: Post your doubts here!

    Is it okay to draw the displayed formulae instead of the structure formulae in the exam ? or we should stick to structural formula as asked ? and will they reduce marks or what ?!
  8. Haya Ahmed

    Chemistry: Post your doubts here!

    syed1995 AbbbbY thats_me Thanks Guys !! anyway my answer was "It is neither ketone nor aldehyde" I think I'm on the safe side .. as carbonyl didn't come to my mind at that time =))
  9. Haya Ahmed

    Chemistry: Post your doubts here!

    People .. is this answer , the same as mine ? http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s13_qp_22.pdf Q5 c(ii) marking scheme : >CO or carbonyl absent my answer : It is not ketone .. (ketone absent) At last .. Is carbonyl the...
  10. Haya Ahmed

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w13_qp_13.pdf Q7b please somone explain briefly .. thanks :)
  11. Haya Ahmed

    Mathematics: Post your doubts here!

    Do you realize that you get -pi/12 ? .. Your answer is NEGATIVE
  12. Haya Ahmed

    Mathematics: Post your doubts here!

    basic angle is pi/6 not pi/12
  13. Haya Ahmed

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w13_qp_13.pdf Q9 Q7b .. why marking scheme have another answer 11pi/12 and how to get this value :) Thanks ^_^
  14. Haya Ahmed

    Mathematics: Post your doubts here!

    In Q9 (iii) there is 0 included in the domain :( not exactly :) and thanks for your effort .. appreciated ^_^
  15. Haya Ahmed

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s13_qp_12.pdf Q10b and Q7 and 9 (iii) (please explain the domain and range thingy cuz i'm confused with them :) )...
  16. Haya Ahmed

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s13_qp_12.pdf Q7 :3
  17. Haya Ahmed

    Mathematics: Post your doubts here!

    How did you get 3,9 ?
  18. Haya Ahmed

    Mathematics: Post your doubts here!

    omg are you serious ? .. since when do we get these kind of decimals .. ABNORMAL decimals !! :@
  19. Haya Ahmed

    need medicine ? :D

    need medicine ? :D
  20. Haya Ahmed

    Mathematics: Post your doubts here!

    but we will get answers like 1.bla bla bla 0. bla bla bla .. how are we supposed to plot this on the graph there must be mistake somewhere plus the graph is not given in the ms so IDK WHAT TO DO :(
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