• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Search results

  1. A

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w11_qp_12.pdf Q4(C),9(D),39(C)
  2. A

    Chemistry: Post your doubts here!

    THANKS ALOT!!!
  3. A

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_s12_qp_12.pdf Q10(B),25(C),28(D) http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s12_qp_11.pdf Q28(B),31(B)
  4. A

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_s12_qp_12.pdf Q7,10,25,28,
  5. A

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s12_qp_12.pdf Q7,10,25,28,
  6. A

    Chemistry: Post your doubts here!

    Answer =D beacuse C-I is a weakest bond (have lowest bond energy)
  7. A

    Chemistry: Post your doubts here!

    Are you sure
  8. A

    Chemistry: Post your doubts here!

    Q13 5HIO---->2I2 + HIO3 + 2H2O answer =B Q19 check this website http://www.chemguide.co.uk/inorganic/group7/halideions.html
  9. A

    Chemistry: Post your doubts here!

    Calculate the number of moles of oxygen using Pv=nRT n=0.0121 they have given us the mass of the elements (1.15g) so we need to check which element will react with 0.0121 mol of oxygen 2Ca + O2 ----> 2CaO n(Ca)=1.15/40.1=0.0287 using mole ratio 2 moles of Ca react with 1 mole of O2 therefore...
  10. A

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w12_qp_12.pdf Q23(C),Q29(A)
  11. A

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w12_qp_13.pdf Q16,39
  12. A

    Chemistry: Post your doubts here!

    please help Q16,24,27,34 of http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w12_qp_13.pdf
  13. A

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w13_qp_13.pdf Q3,31,
  14. A

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w13_qp_13.pdf can anyone please explain Q27
  15. A

    Physics: Post your doubts here!

    v^2=u^2+2gs g=-9.81 (since car is moving upwards and gravity act downwards) v^2=28^2+(2*(-9.81)*22) v^2=352.36 v=18.77= 19 ms^-1 so answer is B
  16. A

    Chemistry: Post your doubts here!

    PLEASE can anyone explain these questions. Q1,9,32,36,37 from http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w06_qp_1.pdf http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w06_ms_1.pdf...
  17. A

    Chemistry: Post your doubts here!

    PLEASE HELP!! Q10,11,18,32,34 from http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s05_qp_1.pdf http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s05_ms_1.pdf and...
  18. A

    Chemistry: Post your doubts here!

  19. A

    Chemistry: Post your doubts here!

    1) formula of butanone=C4H8O (mr of butanone =72) yield=(44.64/72)*100=62% 2) formula of butanoic acid=C4H8O2 (mr of butanoic acid=88) yield=(54.56/88)*100=62% 3) formula of 2 methylpropanoic acid =C4H8O2 (mr of 2 methylpropanoic acid=88) yield =(54.56/88)*100=62% for all options yield of...
  20. A

    Chemistry: Post your doubts here!

    Can anyone PLEASE explain these question! Q5,7,17,18,24,25,30,33,34 from http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w05_qp_1.pdf...
Top