• 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. hamzashariq

    How did the physics 22 paper go?

    What was the direction of S guys?
  2. hamzashariq

    How did the physics 22 paper go?

    lol it didn't exactly sink into the ground, it was most probably thrown from above ground level.
  3. hamzashariq

    WTF CHEMISTRY PAPER 42 IS SO HARD

    you're contradicting yourself. First you say amide is insoluble in both, then you say amide is soluble in NaOH...
  4. hamzashariq

    WTF CHEMISTRY PAPER 42 IS SO HARD

    The NMR molecule i got was (CH3)3 C CH2(OH)
  5. hamzashariq

    WTF CHEMISTRY PAPER 42 IS SO HARD

    Which 2 groups were both insoluble?
  6. hamzashariq

    WTF CHEMISTRY PAPER 42 IS SO HARD

    That last organic question is probably the hardest i have ever encountered.
  7. hamzashariq

    Chemistry: Post your doubts here!

    Ease of hydrolysis increases as the metallic nature of the elements increases.
  8. hamzashariq

    chem practical 33

    I don't think so, Fe2+ was still present.
  9. hamzashariq

    Chemistry: Post your doubts here!

    Ester hydrolysis requires reflux whereas amide hydrolysis does not.
  10. hamzashariq

    Chemistry: Post your doubts here!

    That would require anhydrous FeBr3 catalyst and pure bromine.
  11. hamzashariq

    chem practical 33

    Sulfate instead of sulfite.
  12. hamzashariq

    chem practical 33

    I got -55 KJ/mol
  13. hamzashariq

    chem practical 33

    I'm not sure, but i think you should get marks for the calculations you performed, provided you performed them correctly.
  14. hamzashariq

    chem practical 33

    close enough :D
  15. hamzashariq

    chem practical 33

    yeah
  16. hamzashariq

    chem practical 33

    In question 2 you had to add FA3 in portions of 5cm3, until a total volume of 45 cm3 had been added.
  17. hamzashariq

    chem practical 33

    My Mr was 126, and the titre was 23.60 cm3
  18. hamzashariq

    Mathematics: Post your doubts here!

    http://maxpapers.com/syllabus-materials/mathematics-9709-a-level/attachment/9709_s14_qp_31/ Q5(ii). Really need help with this.
  19. hamzashariq

    Chemistry: Post your doubts here!

    In an experiment, 50.0 cm3 of a 0.10 mol dm–3 solution of a metallic salt reacted exactly with 25.0cm3 of 0.10moldm–3 aqueous sodium sulphite. The half-equation for oxidation of sulphite ion is shown below. SO3^2− (aq) + H2O(I) → SO4^2− (aq) + 2H+(aq) + 2e– If the original oxidation number of...
  20. hamzashariq

    Mathematics: Post your doubts here!

    I need help with this. Prove the identity 2tan 2x = (tan 2x - sin2x)cosec^2 x
Top