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  1. A

    Chemistry P1 Help

    let me try. NaCl + H20 --> (1/2)H2 + (1/2)Cl2 + NaOH find num of mole for NaCl, 58.5kg/(23+35.5) = 1 mol so, 1 mol of NaCl will produce 0.5 mol of H2, 0.5 mol of Cl2 and 1 mol of NaOH. for Cl2, 0.5 mol X (35.5+35.5) = 35.5kg for H2, 0.5 mol X (1+1) = 1kg for NaOH, 1mol X (23+16+1) = 40kg...
  2. A

    chemistry p1 help!! plz.

    @ beacon_of_light thanks for the explanation. yea, i'll look through longman after this. :)
  3. A

    chemistry p1 help!! plz.

    what is SN1 and SN2? for example, in question ON09 variant 2 no. 36? can anyone explain to me and others? :)
  4. A

    This is wht they will ask u for in BIO P34 as!

    @ faem, can u pm me? :) i want some hints.
  5. A

    Bio prac 34

    @Shahab saqib it's okay. maybe i can get it from my friends tomorrow. thanks by the way. :D
  6. A

    Bio prac 34

    @Shahab saqib thanks. but i don't have copy for A2 past years. :(
  7. A

    Bio prac 34

    @ ather hussain- do you know what is exactly the enzyme in bead? catalase or something else? by the way, my name is Amanina. not Aamina. :)
  8. A

    Bio prac 34

    urmm. but i can't think how to relate the alginate beads and the sucrose and kmno4.
  9. A

    practicals.............

    princesszahra- can u pm me on any hints for bio p34. please. :) really appreciate that.
  10. A

    Bio prac 34

    aliginate bead? so, it means enzyme reaction onto H2O2 -> H2O + O2 catalysed by catalase?
  11. A

    IMPORTANT TO ANYONE FROM MALAYSIA!!!TAKING BIO AS AND A2

    malissa, i've sent u an email. can u help me out with the bio p34?
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