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  1. Scafalon40

    As have I. You wan't good grades: work hard. God will not reward you for malpractice, and...

    As have I. You wan't good grades: work hard. God will not reward you for malpractice, and besides: how do you think I know what little I know; hard work, not what you think...
  2. Scafalon40

    And what makes you think I know about it?

    And what makes you think I know about it?
  3. Scafalon40

    Chemistry: Post your doubts here!

    That is exactly why I mentioned carbonic acid. Ca ions will remain in solution as ions, because in most cases Ca salts are soluble. But CaCO3 is not soluble, is it?
  4. Scafalon40

    Chemistry: Post your doubts here!

    Yes, it can: Conditions Temperature:about 200°C Pressure:about 2000 atmospheres Initiator:a small amount of oxygen as an impurity Wanna answer my question above?
  5. Scafalon40

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w05_qp_1.pdf Q34 Ans b Why is statement 3 false? Ca ions will react with carbonic acid to give CaCO3, no?
  6. Scafalon40

    Chemistry: Post your doubts here!

    Nice one:)
  7. Scafalon40

    Chemistry: Post your doubts here!

    Thanks Jaf, I've been at this for quite some time now; finally solved!
  8. Scafalon40

    Chemistry: Post your doubts here!

    Kinda makes sense now, I think... A lot of thinking for one mark though, damn CIE
  9. Scafalon40

    Chemistry: Post your doubts here!

    Strange explanation, lemme think over it....
  10. Scafalon40

    Chemistry: Post your doubts here!

    Um...yeah... well done Jaf; you have me throughly confused!:D
  11. Scafalon40

    Chemistry: Post your doubts here!

    Electrons...wait, aren't we supposed to answer in terms of protons?
  12. Scafalon40

    Chemistry: Post your doubts here!

    lets do this, i'll need your input too because you'll learn it better... What are the initial moles? 1,1,0,0 ( form the equation for the reaction) what are the equilibrium moles? 1-x,1-x,x,x What is the expression for the Kc? What is the value of Kc? Ring a bell?
  13. Scafalon40

    Chemistry: Post your doubts here!

    You'll have to wait a little: busy but i'll post in a few minutes
  14. Scafalon40

    Chemistry: Post your doubts here!

    Angle 1)109.5 Angle 2)120 Angle 3)104.5 For Q10 It forms a quadratic equation The answers are 4 and 2/3
  15. Scafalon40

    Chemistry: Post your doubts here!

    Or removed because the mods can't take a joke...
  16. Scafalon40

    Chemistry: Post your doubts here!

    Look at the equation even more closely, option A is that HSO3^- is acting as a base.
  17. Scafalon40

    Chemistry: Post your doubts here!

    Can anybody answer the question in my signature? Scroll down, it'll be in coloured fonts...
  18. Scafalon40

    Chemistry: Post your doubts here!

    Bye, and a penny for you thoughts... is that ion even a Lewis base?
  19. Scafalon40

    Chemistry: Post your doubts here!

    Never heard of that kind of logic..
  20. Scafalon40

    Chemistry: Post your doubts here!

    Since when is a base an acceptor of OH^- ions?
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