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  1. H

    A2 Physics P4 Questions ONLY

    Why emf induced in the secondary coil not in phase with emf in the primary coil?
  2. H

    Physics: Post your doubts here!

    Why emf induced in the secondary coil not in phase with emf in the primary coil?
  3. H

    A2 Physics P4 Questions ONLY

    rms value is only applicable for sinusoidal waves
  4. H

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_w12_qp_33.pdf Question7 part i anyone? Thanks
  5. H

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s11_qp_41.pdf Q 5(c) (i)
  6. H

    Chemistry: Post your doubts here!

    same same :)
  7. H

    [4797:dragoninja98] brother its been about 10 days I posted my documents to PIEAS but there is...

    [4797:dragoninja98] brother its been about 10 days I posted my documents to PIEAS but there is no response. No idea about admit card. Did the same happened with you when you applied for test?
  8. H

    Chemistry: Post your doubts here!

    lattice energy is always exothermic as only bond formation takes place
  9. H

    CHEM P42 GT and paper discussion

    People here is what I think about GT Oct Nov 13-variant 43 which was many times difficult paper than M/J 14 (42) its GT was quite high on 68. By this standards this time it must be around in the 70's probably low 70's. Agreed AbbbbY Farez itallion stallion ?
  10. H

    CHEM P42 GT and paper discussion

    Atomisation means atoms in gaseous state so you had to convert the Cl2 molecule in 2 Cl atoms by using bond energy of Cl2
  11. H

    CHEM P42 GT and paper discussion

    95 + o_O Thats too much yaar
  12. H

    Chemistry: Post your doubts here!

    Farez brother http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s13_qp_42.pdf Marking scheme: http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s13_ms_42.pdf Question 2 part (b)...
  13. H

    Chemistry: Post your doubts here!

    NaOH + CH3CO2H ----------- CH3CO2Na + H2O moles of NaOH= C*V = 10/1000 * 0.100 = 0.001 moles of acid= C*V = 10/1000 * 0.250 = 0.0025 Hence acid is excess. Both will react with 1 ratio 1 so acid remaining would be 0.0025-0.001= 0.0015 moles. The moles of salt would be 0.001 as moles of...
  14. H

    Chemistry: Post your doubts here!

    Its perfectly fine with structural formula but not displayed of course.
  15. H

    Chemistry: Post your doubts here!

    What type of question is this ? Help needed people! Thank You
  16. H

    Chemistry: Post your doubts here!

    Thank You so much brother but dont we consider this equation= O2+2H2O+4e- ⇌ 4OH- (E=+0.40 V) for the anode reactions?
  17. H

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s11_qp_42.pdf Question 3 (c) part?
  18. H

    Chemistry paper 4

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s11_qp_42.pdf Question 3 (c) part?
  19. H

    Chemistry: Post your doubts here!

    Why cant they donate lone pair in case of amides?
  20. H

    Chemistry: Post your doubts here!

    Why amides give pH=7 while amines are basic in nature? Logic?
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