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  1. SuperXDE

    CHEMISTRY-----STICHIOMETRY

    I am living in Qatar :) Attending via the British Council in Qatar , I was in Port Said Language school in Egypt 2 years ago.
  2. SuperXDE

    help in MATH PLZ (MATH ANGEL)

    Jazaana Wa Eyakoum , ¬¬ Did you understand anything from my post?!
  3. SuperXDE

    Internships? Help!

    It is still too early for me to start fetching about it since I am still with my IGCSEs.. ¬¬ I am not really familiar with the -ship stuff.. but why don't you ask local educational organisations , I only know one which might give you a clue if you contact them , called Global Vision and .. it is...
  4. SuperXDE

    help in MATH PLZ (MATH ANGEL)

    Hope you understood whatever I wrote o.o it is quite hard for me to understand whatever I wrote over here ... Math_Angel would explain it better than me , I am sure of it.
  5. SuperXDE

    help in chemistry... an electrolysis question

    pH measure increases with the excess of Hydroxide ions , and imbalance between both Hydroxide and Hydrogen ions.
  6. SuperXDE

    help in MATH PLZ (MATH ANGEL)

    Well , you reach the end of the curve , from that function mentioned in your post ( Y = X^2 - 4X + 1 ) , the point ( 2 , -3 ) would be the lowest point of the curve , x = 1 will give you Y of -2 , and x = 3 would give you y of -2 as well , that means that the Axis of Symmetry , Middle axis lies...
  7. SuperXDE

    please help in chem

    And remember the 2 rules about Moles , Mole = Concentration × Volume and Mole = Mass / Relative Atomic or Molecular Mass
  8. SuperXDE

    acid bases and salts

    Well , just say HCl is covalent in that case , because it is a 'non-metal' and another 'non-metal' ,But I believe that it is Ionic , because it said that Acids donate a Proton , which means an Electronless Atom and because it became a Positive ion.
  9. SuperXDE

    more doubts in the CHEM syllabus

    Ah.... as it says ... for one ... Describe how chromatography is useful ( Checking for Purity , DNA Electrophoresis in matching Crime Suspect DNAs , and in Law as well ... , Checking for purity of Commercial foods which are doubted to contain illegal materials? ) Tendency of a metal to form...
  10. SuperXDE

    CHEMISTRY-----STICHIOMETRY

    My name is Sherif Azmy , and I do not attend a school , Self-study student.
  11. SuperXDE

    CHEMISTRY-----STICHIOMETRY

    أي خدمة ;)
  12. SuperXDE

    CHEMISTRY-----STICHIOMETRY

    Umm... Stiochemistry is just about Equations? in other words ... a balanced Equation ... what is an Equation? Formulas ? Word equations? and the extended part of it is Mole and its calculations which are based on 2 rules , Mole = Conc × Volume , Mass = Mole × Relative Mass ( Either Atomic or...
  13. SuperXDE

    CHEMISTRY-----STICHIOMETRY

    I don't really get what you are seeking to be honest.
  14. SuperXDE

    There is smthing wrong in the papers!

    Okay ...This is probably from either .. another dimension or another organisation , Do you mind posting a screenie of it , Perhaps we could grind you something for it?
  15. SuperXDE

    CHEMISTRY-----STICHIOMETRY

    Check the notes mentioned in this post. Check this , hope it helps
  16. SuperXDE

    chemisrty

    Ta2reeban Talab Pure Wallahu A3lam , bas ana Msh faker 5aaales , Bas Fokak men el Mawdoo3 dah delwa2ty we rakkez 3la Paper 3 , 5alas Paper 6 5elset we Inshaa'Allah el 5eer hy7sal.
  17. SuperXDE

    chemisrty

    My steps... I knew nothing about Metal Extraction after that exam , during it , or before it , So I simply ...¬¬ 5arraft Bm3na el Kelma in that question I wrote something about heating and copper will be formed if we add it to some acid , -_-"
  18. SuperXDE

    There is smthing wrong in the papers!

    o.O Look at the bottom of each page , there might be a clue about its original number , because it is not paper 3 of Winter 2003 at all.
  19. SuperXDE

    chemisrty

    If Malachite was Copper Carbonate , abbreviated as CuCO3 , All the materials you will need to Extract copper from it are , Bunsen Burner , Crucible ( And its lid ) , and Carbon ( or Carbon Monoxide ) and of course a Tripod to hold the Crucible. You put the Malachite in the Crucible , Start...
  20. SuperXDE

    chemistry ( urgent)

    There is no Question 6 in November 2003 For 4)b)iii) June 2004 The graph would show a faster reaction , because Aluminium is more reactive the Iron and less reactive than Sodium.
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