• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Search results

  1. KyleoAhsan

    I hope you are still around :D!

    I hope you are still around :D!
  2. KyleoAhsan

    Tutoring for O/A levels by World Record Holder

    Do you give A-level guidelines for Chemistry, Physics and Maths?
  3. KyleoAhsan

    Chemistry Oct/Nov P4 2012

    For the titration question here are the answers ^_^! 1. 1.61g 2. Pink to Colourless 3. Average volume = 25.6 4. 25.6/1000 x 0.1 = 0.00256 moles 5. 1 mole --> 1 mol so 0.00256 --> 0.00256 6. 25.0cm^3 --> 0.00256 / 250cm^3 --> 0.0256 7. 50/1000 x 1.0 = 0.05moles 8. 0.05 - 0.0256 = 0.0244 9...
  4. KyleoAhsan

    Biology; Chemistry; Physics: Post your doubts here!

    Thanks for correcting my mistake, I did not refer to the electrochemical series! Yeah, If I knew that OH- was lower than Cl- then my explanation would be same as yours! sorry for my silly mistake :D! and the answer for your question is when a substance is molten or aqueous its because of the...
  5. KyleoAhsan

    Biology; Chemistry; Physics: Post your doubts here!

    Well I am not so sure about the answer but I just wanted to try, hope this is correct if I am wrong please correct me ^_^! Now when concentrated aqueous Sodium Chloride is Electrolysed the ions get separated, i.e. H+ OH- and Na+ Cl- now for the negative electrode two things will go that is Na+...
  6. KyleoAhsan

    O-level Notes Center

    http://www.xtremepapers.com/community/threads/xamiya-blogspot.8883/ Best Resource I found so far ! :D!
  7. KyleoAhsan

    Biology; Chemistry; Physics: Post your doubts here!

    Oh well, Obviously not seen in GCSE O level (Y)! I am pretty sure I was never taught about it O: ~
  8. KyleoAhsan

    Biology; Chemistry; Physics: Post your doubts here!

    To be honest I have never seen those questions on past papers too! So I am not answering, anything from O levels me and scouserlfc will help! ;)!
  9. KyleoAhsan

    Useful stuff compiled

    This website is good for Maths, Biology and Chemistry :)! Have a look around http://www.onlinemathlearning.com/biology.html
  10. KyleoAhsan

    Biology; Chemistry; Physics: Post your doubts here!

    What do you use to study? you really good at science subjects (Y)!
  11. KyleoAhsan

    Biology; Chemistry; Physics: Post your doubts here!

    Stick to the forum and also get help in any doubt you have! this will greatly improve your grades.....If you do well at grade 9 and 8 you will be doing very good in 10, all your work depends on the work you do now! so use your time efficiently and well, try to score 100/100 in your current exams...
  12. KyleoAhsan

    Exothermic reaction(s)

    Well In exothermic reactions heat energy is released, we know that it is an exothermic reaction since enthalpy change is negative (-) hence , the surrounding temperature must go up while the reaction mixture cools as heat energy is released to the surrounding, I don't know if the answer is...
  13. KyleoAhsan

    Exothermic reaction(s)

    B?
  14. KyleoAhsan

    Biology; Chemistry; Physics: Post your doubts here!

    You will be doing O level first, O level means Ordinary Level! and A level means Advanced Level. If you are science student then you will be studying Biology, Chemistry and Physics ! In Biology you will study about the Environment, Human anatomy [ like how digestion works or circulatory system...
  15. KyleoAhsan

    Biology; Chemistry; Physics: Post your doubts here!

    Well no, Here is a very informative information about the urine formation :) http://www.cosmolearning.com/videos/urine-formation/
  16. KyleoAhsan

    Maths, Addmaths and Statistics: Post your doubts here!

    Perhaps using the coordinates and drawing it will surely help you :)! plot the points and see which are the diagonals !
  17. KyleoAhsan

    Maths, Addmaths and Statistics: Post your doubts here!

    Which book are you referring to? O.o! Well I guess solutions of equations must contain anything that has an unknown variable and has some mathematical operations that is [ Multiply, powers of, add, subtract, divide, etc ] and is equal to some value! So quadratic equation should be included I...
  18. KyleoAhsan

    Maths, Addmaths and Statistics: Post your doubts here!

    Well yeah, Always remember if the signs are same you subtract ! If the signs are different always Add, Well the method I used is to be sure I make no mistakes in using the rules :D! But what you are comfortable with is what you should go with :)!
  19. KyleoAhsan

    Maths, Addmaths and Statistics: Post your doubts here!

    First ! Let x or y be alone I choose x! 4x=y+11 hence x= y/4 + 11/4 now we know that x = y/4 + 11/4 we can now substitute this as value of x in the other equation 2(y/4+11/4)+y=7 Now just solve it :D! (1) 2x+y=7 (2) 4x=y+11 (3) x = y/4 + 11/4 2(y/4 + 11/4) +y=7 2y/4 + 22/4 + y = 7...
  20. KyleoAhsan

    Physics, Chemistry and Biology: Post your doubts here!

    Because each enzyme has only one optimum pH, where as from graph we can see that there are two enzymes since the activity of enzymes are different. One works at pH 8 and the other works best below pH 8, I hope the answer is right and you understand what I mean :D
Top