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  1. S

    Chemistry: Post your doubts here!

    Cause Hcl and nitric acid are both strong acids which dissociate completely in water to give one mole if hydrogen ions
  2. S

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s13_qp_12.pdf 25 D
  3. S

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s13_qp_12.pdf 11: Answet is B
  4. S

    Chemistry: Post your doubts here!

    How do u convert C2H5OH into C2H5Cl?
  5. S

    Physics P-34 GT.

    My times differed by approximately 1.7s and I took 90, 80, 70, 60 and 50 degrees as the angles
  6. S

    Physics P-34 GT.

    Yeah I thought that too but them can our times differ by so much? Do you remember your times? I think I got less than 30 s for all of them
  7. S

    Chemistry: Post your doubts here!

    In q32, does the gas partially turn into a liquid too?
  8. S

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s12_qp_13.pdf 12(C)
  9. S

    Chemistry: Post your doubts here!

    Electronegativity increases down a period and up a group because the effective nuclear charge is the greatest. Sulfuric acid usually acts as an acid but acts as an oxidizing agent when it itself gets reduced into sulfur, sulfurdioxide or hydrogen sulfide. HI and HBr ate strong enough reducing...
  10. S

    Chemistry: Post your doubts here!

    Is 32 B. it behaves no ideally because volume is directly proportioned al to temperature for an ideal gas and it partially turns into a liquid because its volume decreases which means that the morgues are closing together and ate experiencing relatively stronger intermolecular forces
  11. S

    Chemistry: Post your doubts here!

    Is 23 B cause then it can follow a 1:2:1 ratio and ethens can form 50% of the products
  12. S

    Chemistry: Post your doubts here!

    In question. 11, one mole of the compound gives 3 moles of carbon so it's C since o.072/24 is .03 so the number if moles of the compound should be 1/3rd of the number of moles of carbon that it would produced-.01-so C is correct
  13. S

    Chemistry: Post your doubts here!

    So HSO4 will be greater than SO4...but won't that shift the equilibrium to the right?
  14. S

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s12_qp_12.pdf 33 answ is D
  15. S

    Chemistry: Post your doubts here!

    Also isn't alcl3 tetrahedral and not trigonal planar??
  16. S

    Chemistry: Post your doubts here!

    Is carboxylic acid completely soluble in water?
  17. S

    Physics P-34 GT.

    They're saying that it should be positive because time cant be negative and idk there are some people here only :/ but they do have a point
  18. S

    Physics P-34 GT.

    What was your y-intercept? Mine came out to be around -14 s^2 and people got a positive yintercept a d I've no idea how :S are u on of them?
  19. S

    Physics P-34 GT.

    It did say bend it abd you can't increase an angle by bending it :p well I got 800 something and I decreased it
  20. S

    Chemistry: Post your doubts here!

    How does solid iodine contain more then one type of bonding? Why is there only one kind in silicon dioxide?
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