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  1. L

    boltzmann distribution..!

    there's no boltzman distribution in this ppr
  2. L

    boltzmann distribution..!

    hmm u never know whats going to come and whats not going to come :)
  3. L

    boltzmann distribution..!

    if the temp is low then make the graph higher and shifted towards the left and if the temp is high then the graph will be lower and shifted towards the right.
  4. L

    Help us improve XtremePapers!

    that is totallly IMPOSSIBLE :ROFL: :ROFL:
  5. L

    Heat of Combustion Problems?

    ur welcome :) any more doubts?? :)
  6. L

    Heat of Combustion Problems?

    yes the ΔHf is for the product! well i think its not possible becuz, here actully the bond is breaking not forming, which is endothermic
  7. L

    Heat of Combustion Problems?

    lol that was -571.8 :D
  8. L

    Heat of Combustion Problems?

    remember that 1) ΔHf = ΔHc (reactants) - ΔHc (products) and 2) ΔHr= ΔHf(products) -ΔHf(reactants) for this question we use the first equation i.e. ΔHf = ΔHc (reactants) - ΔHc (products) 2C + 2H2 ---> C2H4 so ΔHc reactants= 2C + 2H2 2C----2* -393.7 = -787.4 2H2---2*-285.9 = -571.8 total...
  9. L

    Physics P31 (Please put your info)

    they are talking abt paper 33!! im sure in 31 we hav electricity!!
  10. L

    PHYSICS AS HELP

    im getting 0.027!! :( i make 2 straight lines, starting frm 0 till 0.3 on the middle top then i found the area under 2 triangles.. i gt 0.024 m then i count the number of boxes in the area that was not part of the triangle...and then i cross multiplied i got 0.027!!!
  11. L

    Confusion Force.............

    van der waals(instantaneous dipole-induced dipole) is DIFFERENT from just dipole-dipole forces!!! dipole-dipole force is stronger than van der waals(instantaneous dipole-induced dipole)!
  12. L

    Confusion Force.............

    but dipole-dipole is a different force!!
  13. L

    Confusion Force.............

    yes!!
  14. L

    Confusion Force.............

    van der waals!! which is same as instantaneous dipole- induced dipole
  15. L

    PHYSICS AS HELP

    are we getting the same answer using the equation or not?
  16. L

    PHYSICS AS HELP

    but why cant we use the equation?? :o
  17. L

    Confusion Force.............

    yeah H2S has instantaneous dipole- induced dipole forces of attraction
  18. L

    PHYSICS AS HELP

    u use the equation s=ut+1/2 at^2 u is 0, so the equation will be s=1/2 at^2
  19. L

    Confusion Force.............

    i didnt get ur ques!?!
  20. L

    PHYSICS AS HELP

    whats so confusing?? tell me i'll try to help u why would u divide it by two??
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