• 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. B

    Mathematics: Post your doubts here!

    Yes.
  2. B

    Mathematics: Post your doubts here!

    Can you go through that in detail please I still didn't get it?:confused:
  3. B

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s12_qp_11.pdf 7)b)i) Can anyone please explain I don't understand the method in the marking scheme and why don't we use -1<.......<1?
  4. B

    Chemistry: Post your doubts here!

    Really nice work and very user friendly.
  5. B

    Chemistry: Post your doubts here!

    Yes,just calculate.
  6. B

    Chemistry: Post your doubts here!

    Can you give me the chemistry papers theory from 2000 to 2002 please?
  7. B

    Mathematics: Post your doubts here!

    Can you give me the chemistry papers theory from 2000 to 2002 please?
  8. B

    Mathematics: Post your doubts here!

    Can you give me the chemistry papers theory from 2000 to 2002 please?
  9. B

    Mathematics: Post your doubts here!

    Thought blocker can you do me a favor please?
  10. B

    Chemistry: Post your doubts here!

    Can I have M/J 2001 chemistry 02?
  11. B

    Mathematics: Post your doubts here!

    Are you sure that is the method?
  12. B

    Mathematics: Post your doubts here!

    is that method important?
  13. B

    Mathematics: Post your doubts here!

    How to do it using midpoint?
  14. B

    Mathematics: Post your doubts here!

    Do you know how to do the question using vector move step?
  15. B

    Mathematics: Post your doubts here!

    How to use the vector move step? http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s07_qp_1.pdf Q)6)ii) coordinates of D.
  16. B

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s11_qp_31.pdf 2)a)ii) How do you know from whose number of moles to divide from when calculating enthalpy change per mole? Like in question if 2 compounds are reacting at a ratio of 1:2...
  17. B

    Chemistry: Post your doubts here!

    but barium chloride is also a ppt. it is given as a standard test for Cl-. And also how can we see solubility when ppt of sulfate is left?
  18. B

    Chemistry: Post your doubts here!

    What do you mean?:unsure:
  19. B

    Chemistry: Post your doubts here!

    So then how do we test for the Cl- ion then? For that we must use AgNO3 right? Then when we add ammonia the AgCl ppt. would dissolve but then the AgSO4 ppt. would remain and we would not know whether the ppt actually did dissolve or not?
  20. B

    Chemistry: Post your doubts here!

    Thanks. So basically your are saying to write all the working step by step without joining them into one step huh? OK, the other question is say there is a a salt having both a Cl- and a sulfate ion, how do we confirm it has a Cl- ion? Because if we test with AgNO3 we will anyway get a...
Top