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Recent content by durr

  1. D

    How is your preperation for Chem Unit 2 ???

    thanks.
  2. D

    How is your preperation for Chem Unit 2 ???

    when OH attacks 1-bromobutane, the reaction proceeds via sn2 reaction. activated complex is formed (carbon bonded to 5 elements), do we add charge on it?
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    How is your preperation for Chem Unit 2 ???

    yes, but I don't use van dar waal. in the book it says van dar waal means london and permanent dipole-dipole and from jan 12 er: This candidate correctly identifies the main intermolecular force involved and the factor which determines the magnitude of the force in these examples. Strictly...
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    How is your preperation for Chem Unit 2 ???

    that's what I think, because Metal + acid --> salt + hydrogen
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    How is your preperation for Chem Unit 2 ???

    if it's about boiling temperature, then look for intermolecular forces (hydrogen bonds, london forces, and permanent dipole-dipole) names... London forces, dispersion forces, instantaneous dipole- induced dipole interactions, temporary induced dipole-dipole. also van dar waal
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    How is your preperation for Chem Unit 2 ???

    in this paper: http://www.edexcel.com/migrationdocuments/QP%20GCE%20Curriculum%202000/June%202011%20-%20QP/6CH02_01_que_20110527.pdf question 19 part b iii what's the answer? I wrote H2, and did the balancing, but in mark scheme, water is the other product not h2...
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    How is your preperation for Chem Unit 2 ???

    iodine has more electrons, so more stronger london forces yes, instantaneous dipole- induced dipole interactions. learn all the names of london forces.
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    chemistry unit 3 !!! discussion in here !! =p

    ^look in the question, somewhere he will tell you assume density is 1g/cm3, and you have 50cm3 acid, which is 50g.
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    Applied ICT 9713- May/June 2012 Series

    I'm doing it in Kuwait too.
  10. D

    Computers & ICT: Post your doubts here!

    Thanks A.Elwy. and btw, I'm not nervous. Having 2 exams in one day is not an easy task ;) AICT, and Edexcel chemistry 3b. good luck everyone.
  11. D

    Computers & ICT: Post your doubts here!

    Thanks a lot, student12.
  12. D

    Computers & ICT: Post your doubts here!

    Could someone please try to answer the questions below? :d 1- How time management softwares help in organising tasks like development of a website 2- Details about public and private encryption keys 3-Features of software used to control call centre operations 4- Data flow diagrams, and...
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