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  1. G

    Physics: Post your doubts here!

    wait what if we make the center line the horizontal line. and if we resolve the two angled 10 N forces we will get 17.3 in the same line as the 10 newtons but they are in opposite directions. so we will have to subtract them and we get 7.3 :/
  2. G

    Physics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w06_qp_1.pdf Q15 and Q21 someone please! The answer is C for 15 and D for 21
  3. G

    AS Chemistry Doubts

    one of the other members made this hess's cycle for this question http://i1228.photobucket.com/albums/ee457/avril_bandaids/sadcas.jpg
  4. G

    AS Chemistry Doubts

    Q23) here first write down the products. its gonna be X > CH4 + C2H4 + C3H6 in this equation the mole fraction of ethene is 1/4 = 0.25 but it is supposed to be 2/4 = 0.5 so multiply ethene by two and add all the products to get the alkane. you will get C8H18. Q37) 1 - is hydrogenation to form...
  5. G

    Chemistry: Post your doubts here!

    oh THANK YOU very much! good luck!
  6. G

    Chemistry: Post your doubts here!

    someone please answer....Q9) http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w06_qp_1.pdf :)
  7. G

    Chemistry: Post your doubts here!

    this is what i think, first calculate the moles of H2 (molecule) 1/2 = 0.5 moles now the no. of moles of the atoms is 0.5 x 2 = 1 the no of atoms = no. of moles x 6.02x10^23 which is 1x 6.02x10^23 = 6.02x10^23 now from the options the only one with the no. of moles = 1 is C Neon. 20/20 = 1
  8. G

    Chemistry: Post your doubts here!

    Q6) what i think is because, Nitrogen's molecule has more no. of electrons than the hydrogen molecule, therefore it's gonna have stronger vanderwaals forces than H, so as the intermolecular forces increase the gas is more likely to deviate from ideal gas behaviour. Q11) ok, here just use...
  9. G

    Chemistry: Post your doubts here!

    Be honest and Allah will help you :) if you've done enough practice then everythings gonna be ok!
  10. G

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w06_qp_1.pdf Q9!
  11. G

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w06_qp_1.pdf Q4 plzzz!
  12. G

    Chemistry: Post your doubts here!

    you are right, thank you
  13. G

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/...d AS Level/Chemistry (9701)/9701_w07_qp_1.pdf Q9, someone! good luck to y'all!
  14. G

    MarkScheme: Chemistry Paper 1 November 2001?

    could someone also post the 2001 p1 question paper :) pleeaze
  15. G

    Chemistry: Post your doubts here!

    can someone please explain Q32 http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w07_qp_1.pdf :)
  16. G

    Chemistry: Post your doubts here!

    see there is Cl2+ which means there are two Cl atoms, for ever peak. So here you have to make combinations....so the peak could either be, 1) Cl-35, Cl-35 2) Cl-37, Cl-37 3) Cl-35, Cl-37 so in total thats 3 possible peaks that could be recorded. hope that helps. good luck
  17. G

    Chemistry: Post your doubts here!

    got it, used algebra.
  18. G

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w04_qp_1.pdf can someone please explain Q23 and Q31. Thanks..and Good luck to ya all!
  19. G

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w04_qp_1.pdf Q5, please explain! thank you :)
  20. G

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s04_qp_1.pdf can someone please explain Q9. the answer is B thank you :)
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