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  1. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    lithium oxide has the electronic configuration of 2,1 so it has 1 electron in its outer shell that it can loose or give some other non metal such as oxygen and oxygen has config. of 2,6 so to complete oxygens outer shell we need 2 more electrons and to cmplete lithiums outer shell we need to...
  2. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    6b(ii) http://www.webchem.net/notes/chemical_bonding/ionic_bonding.htm
  3. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    hmm..srry
  4. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    1c(ii)
  5. Dashexdan

    hmm...ban raha hai !! koi suggestions?

    hmm...ban raha hai !! koi suggestions?
    • Dashexdan
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  6. Dashexdan

    oh wow a female with a boyz name and a picture!! nice disguise :P lol xD

    oh wow a female with a boyz name and a picture!! nice disguise :P lol xD
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  7. Dashexdan

    oh really me too !! although if u in grade 10 y hav i nevr seen u around ever?/

    oh really me too !! although if u in grade 10 y hav i nevr seen u around ever?/
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  8. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    u first find the 92.3% of 78 that is for carbon=92.3/100*78=71.99 ,, round it of to 72,,,so carbons total molecular mass is 72 and the moles are 72/12(carbons molecular mass) so 72/12=6 72 is the total molecular mass of carbon in benzene thus 78-72=6 to find hydrogens tootal molecular mass in...
  9. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    aluminium and carbon means the formula will be (AlC or Al +C) ?
  10. Dashexdan

    oh n before?

    oh n before?
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  11. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    yeah ....bt if its only aqueous written there so we take the solution as dilute!!
  12. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    yes they r the same
  13. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    it is when ur line of sight is not perpendicular the measurement on the object u r reading from!! eg ruler http://aphysicsteacher.blogspot.com/2009/12/what-is-parallax-error.html
  14. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    when molten+metal non metal whn conc. = metal and non-metal whn dilute=metal and hydroxide and in aqu state the metal at cathode cud be either hydrogen or the other metal in the reaction depending on the reactivity series and the one below in the reactivity series always goes to cathode!! hope...
  15. Dashexdan

    no i dont think so!! btw which skool u from? :P

    no i dont think so!! btw which skool u from? :P
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  16. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    i think u tagged the paper wrong!!
  17. Dashexdan

    hey u from jed and r u paki?? O.o

    hey u from jed and r u paki?? O.o
  18. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    ahan thnx!! :)
  19. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    http://www.ehow.com/how-does_5191693_salt-water-affect-iron_.html it says salt water speeds rusting!
  20. Dashexdan

    Physics, Chemistry and Biology: Post your doubts here!

    http://www.xtremepapers.com/community/threads/all-notes-o-level-0r-igcse-a-level.4866/ go to the physics portion!!
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