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  1. S

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s09_qp_1.pdf q10
  2. S

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s06_qp_1.pdf qs 33, 35 http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s07_qp_1.pdf why is 36 B and not C? Why can't we just find...
  3. S

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s09_qp_1.pdf q29
  4. S

    Chemistry: Post your doubts here!

    Calcium nitrate?
  5. S

    Physics: Post your doubts here!

    This is from paper 1...and the answer is v=underoot (g x lambda)...but HOW?
  6. S

    Physics: Post your doubts here!

    Which formula could be correct for the speed v of the ocean waves in terms of the density p of sea water, the acceleration of free fall g, the depth of the ocean h and the wavelength, lambda?
  7. S

    Chemistry: Post your doubts here!

    It involved the breakage of the triple nitrogen bond...hey is the process endothermic??
  8. S

    Chemistry paper 2 7th may

    That wasn't my question but nope. In either case you're breaking a C-O bond. I got it btw
  9. S

    Chemistry paper 2 7th may

    LISTEN. When a ringed structure containing an ester is hydrolyzed why died the bond break between c=o and o and NOT coo- and the rest if the chain succeeding the singly bonded oxygen? It's a past paper question..that's where we were supposed to show the bond breaking...CAN SOMEONE PLEASE ANSWER
  10. S

    Chemistry: Post your doubts here!

    Suchal Riaz this one: At a total pressure of 1 ATM, dinitrigen tetra oxide is 50% dissociated at a temperature of 60 degrees, according to the following equation: N2O4 <---> 2NO2 What's the value if the equilibrium constant, Kp, for the reaction at 60 degrees?
  11. S

    Chemistry: Post your doubts here!

    Dude group 7 elements are oxidizing agents cause they're very easily reduced to their halides...the halides in turn are good reducing agents
  12. S

    Chemistry: Post your doubts here!

    Doesnt Na have the lowest ionization energy? How do we know if something makes a good reducing agent, if not by lookibg st their ionization energy?
  13. S

    Chemistry: Post your doubts here!

    Why are these two mechanisms energy demanding and difficult to carry out: Converting diamond into graphite Converting graphite into diamond Suchal Riaz
  14. S

    Chemistry: Post your doubts here!

    And what if they had all been atoms? Would it be K, Ca, Al, Cl and Ar in terms of their strength as reducing agents? Basically if their next ionization energy is low they make good reducing agents right?
  15. S

    Chemistry: Post your doubts here!

    Which if the following is the strongest reducing agent? A Cl- B Ar C K+ D Ca 2+ E Al3+ Can someone please answer!! Suchal Riaz GCE As and a level
  16. S

    Physics P-22 GT.

    Okay let's just stop
  17. S

    Physics P-22 GT.

    No it was charge
  18. S

    Chemistry: Post your doubts here!

    Could some one explain. This to me!
  19. S

    Physics: Post your doubts here!

    No effect on time...not sure aboutvanplitude
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