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  1. salvatore

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s07_qp_1.pdf Please help me solve no. 3.. I'm totally confused! Thanks PhyZac I need urgent help :)
  2. salvatore

    ~~jokes?? in here?? really??

    LooOOooL
  3. salvatore

    Physics: Post your doubts here!

    Thanks a lot for the explanation.. Much appreciated :)
  4. salvatore

    Chemistry: Post your doubts here!

    Equilibrium constant does not change when you change the pressure of a system. The only factor that affects the equilibrium constant is temperature. The equilibrium constant is just a ratio of the product of the products to the product of the reactants.. right? Now increasing the pressure of the...
  5. salvatore

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20%289702%29/9702_w08_qp_2.pdf Could someone please help me with no. 7 (b) (ii).. I'm totally confused!
  6. salvatore

    ~~jokes?? in here?? really??

    Story of Newton's Laws of motion: Once a cow was walking Newton stopped it..........it stopped! He found his First Law:"An object continues to move until it is stopped...!" Then he gave a Force "F" by kicking the cow... Cow gave a sound..."ma" He formulated the second law...
  7. salvatore

    Physics: Post your doubts here!

    A polymeric material, in this case polythene, is capable of supporting a much higher stress. In other words, the ultimate tensile stress of the material is very large. The graph can not accommodate all the values of the stress and therefore, a gap is added added in between to differentiate the...
  8. salvatore

    Lol.. yes indeed!

    Lol.. yes indeed!
    • salvatore
    • Profile post comment
  9. salvatore

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_w12_qp_13.pdf Please help me with question no. 9 (i & iii) and 10 (iii). I'll really appreciate if anyone could help me solve the above questions (Hope they aren't too many :D) Thanks
  10. salvatore

    Physics: Post your doubts here!

    Path difference is simply the difference in the distances travelled by two waves from coherent sources at a particular point. In other words, it is the difference (in meters) between the lengths of two paths. Phase difference is a little complicated.. but hope the following explanation will...
  11. salvatore

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20%289702%29/9702_s07_qp_2.pdf Please help me with qn. no 3 c (i & ii).. seems pretty easy but I just can't solve it. Thanks
  12. salvatore

    Chemistry: Post your doubts here!

    That's a clear explanation. Thanks a lot :)
  13. salvatore

    Chemistry: Post your doubts here!

    Thank you for your reply.. The first part is clear. I don't understand the second part where we are supposed to add the two reaction enthalpies and subtract from the overall combustion enthalpy. Could you please explain to me why is it supposed to be that way? I don't get the concept behind...
  14. salvatore

    ICT PAPER 1 ://

    You're welcome.. Not at all :)
  15. salvatore

    Chemistry: Post your doubts here!

    I'm re-posting this.. anyone?
  16. salvatore

    ICT PAPER 1 ://

    Not that I know of..
  17. salvatore

    ICT PAPER 1 ://

    Yes it is.. that's just the name of the book :)
  18. salvatore

    ICT PAPER 1 ://

    Alaykum Salaaam, The key to passing the ict theory exam is by absorbing each and every concept from the text b00k (AS and A level applied ict). Once you're done with the book, study ALL the past papers that are available. This is because the questions are set having the same concepts as in the...
  19. salvatore

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w05_qp_2.pdf I need help with qn no. 2 (d).. please explain how I can use the data given to find enthalpy change of formation. Thanks
  20. salvatore

    Chemistry: Post your doubts here!

    The answer for qn. 25 is C. To convert a halogenoalkane to a nitrile, we need to react it with cyanide ions (Usually potassium cyanide, KCN, in ehtanol). So X is solved. Hydrolysis is used to convert a nitrile into a carboxylic acid. So, by reacting the butanitrile with dilute HCL, the...
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