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  1. D

    More mole concept ques!!

    plz help again!1) s02 qp 3 #5 (c) (i) to (iii) http://www.xtremepapers.net/CIE/Cambrid ... 2_qp_3.pdf 2) w08 qp3 # 7 (a) (i) http://www.xtremepapers.net/CIE/Cambrid ... _qp_03.pdf 3) w07 qp 3 #7 (b) (iii) http://www.xtremepapers.net/CIE/Cambrid ... 7_qp_3.pdf 4) w01 qp3 #2 (c)...
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    Mole Concept ques!

    plz help! s07 qp3 #7 (d) http://www.xtremepapers.net/CIE/Cambrid ... 7_qp_3.pdf Ques with one mole of fat reacts with.... s09 qp 3 # 9(a) http://www.xtremepapers.net/CIE/Cambrid ... 9_qp_3.pdf (1st varient) the answer im gettin is Mg2N but i dnt understand how the markscheme has Mg3N2?? s06...
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    chem help

    can some1 plz explain how to find %yield n plz give an example?...
  4. D

    chem ques!

    whats the difference between atomic mass unit (a.m.u) and mass number for an element? whats the a.m.u for Oxygen and for each of the neutron and proton for oygen as well? Plz help!
  5. D

    Haber n Contact process HELP in chem!

    can someone plz xplain the haber n contact process in a simple but understandable form??! (step by step) thanx. :)
  6. D

    chem ques!!!

    hey can someone plz xplain the salt preparation methods direct combination and titration in detailed...thanx! :)
  7. D

    URGENT!! PLZ HELP!!!

    :( i cannot oen the paper oct/nov 09 qp 6 for chem from xtremepapers...some1 plz help me!!thanx!
  8. D

    salt preparation help in chem!

    can some1 plz xplain the different methods of salt preparation in detailed but a simple form? :mrgreen:
  9. D

    difference

    can any1 explain the difference btw IGCSE and GCE olevels? my skool recently switched from GCE to IGCSE n i wanna know the difference....
  10. D

    help in bio!

    can someone plz explain what is reliability and control for bio practical?....
  11. D

    w06_06_qp_6?

    can someone plz help me wid ques 1(c) on bio paper 6 oct/nov , the mark scheme doesnt help. thanx.
  12. D

    Ques for Bio P6

    i have a question for the bio p6. how do u know which of the variables to use for the x-axis and the y-axis for the gragh questions? for eg if given values for time and temperature which axis to use for teperature and which axis to use for time?
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