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  1. ZainH

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w11_qp_12.pdf Q4)ii) I'm clueless .___.
  2. ZainH

    Dear life, when I said 'can my day get any worse?' it was a rhetorical question not a challenge.

    Dear life, when I said 'can my day get any worse?' it was a rhetorical question not a challenge.
    • ZainH
    • Profile post
  3. ZainH

    Chemistry: Post your doubts here!

    Ah I see, thanks again (:
  4. ZainH

    Chemistry: Post your doubts here!

    Thanks a ton, any specific reason why these reagents are chosen?
  5. ZainH

    Chemistry: Post your doubts here!

    Does no one know what reagents/conditions are used for elimination reactions, and why? Asked it twice, no reply |:
  6. ZainH

    Chemistry: Post your doubts here!

    Could anyone explain to me what reagents/conditions are used for elimination reactions, and why? Thanks in advance.
  7. ZainH

    Chemistry is going to be my down-fall ..

    Chemistry is going to be my down-fall ..
    • ZainH
    • Profile post
  8. ZainH

    Chemistry: Post your doubts here!

    Hm, what about the condition?
  9. ZainH

    Chemistry: Post your doubts here!

    What are the reagents/conditions for an elimination reaction and why?
  10. ZainH

    Chemistry: Post your doubts here!

    Oh wow.. How the he- ? ... Laaaaaaame, alteast I'm not alone xD . Thanks btw.
  11. ZainH

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s11_qp_21.pdf Q2)d) Isn't reaction 1 the one where Ca goes to CaCl2? How would a solouble sulfate be an appropriate reagent? Explanation please (:
  12. ZainH

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s12_qp_22.pdf Q1)c)i) I understand how sulphur will have two lone pairs but how will nitrogen? It has 5 electrons in it's valence shell and it's only bonding with two other sulphur...
  13. ZainH

    Chemistry: Post your doubts here!

    i) How come Na can only react with alcohols? ii) How'd you find that equation? Could you explain a bit more please? (:
  14. ZainH

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s12_qp_21.pdf Q5)b) An explanation as well please x)
  15. ZainH

    Chemistry: Post your doubts here!

    Ah all right, gotcha' .
  16. ZainH

    Chemistry: Post your doubts here!

    Thank you, also one quick question. For testing for alkenes, we use bromine water. Now what I'm not sure is how it tests for them. Does the alkene decolourise or the bromine water? And does it mean it's present or not present? Could you please briefly explain how to test for them with bromine...
  17. ZainH

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s12_qp_21.pdf Q4)a)iii) How would I know what reagent? The answers are phosphoric acid and concentrated sulphiric acid, so are these two used for every dehydration reaction or just...
  18. ZainH

    Mathematics: Post your doubts here!

    Oh wow thanks a ton , that helped :D
  19. ZainH

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w12_qp_42.pdf Q3. Explanation as well please x)
  20. ZainH

    Mathematics: Post your doubts here!

    Oh wow, how did I not notice that? Thanks ;D
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