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  1. AbbbbY

    Chemistry: Post your doubts here!

    34: I'd go with B. 3 is definitely wrong because calcium IONS wont react with H+, but solid will. 1 and 2 are correct. 2 is most definitely correct, and so I'm left with B. 35: 1- It does. 2- It does. 3- It doesn't because it's basic itself. so, A 36: B? 1- It is. NaClO3. 2- It does...
  2. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

    Still don't know what you're talking about.
  3. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

    I believe this is a help thread, not a 'challenge' thread. So, whoever can help, should help. Just waht I feel. Additionally, this concept, the one used in this question, starts and ends at O Levels. A Level Vectors are very, very different.
  4. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

    Still gets me full marks in the exam. Also, look in the post, I've already corrected that long ago. -_-
  5. AbbbbY

    Chemistry: Post your doubts here!

    Original conc is 1.5 dm3 this means: 1.5 mols in 1000 cm3 so 0.15 mols in 100 cm3 Conc of Fe2+ 0.6 mols in 1000 cm3 so 0.06 mols in 100cm3
  6. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

    Practice it enough and you'll ace it too. Seriously, O level vectors are nothing. Wait till the planes kick in and they start twisting the questions ;) Still 2 years before you have to witness that though.
  7. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

    Haha. I figured you'd get stuck here. I skipped two steps here (or 2.5 more like). Practice these enough and you'll too. But, don't do this in O Levels bec they usually ask for the steps there. Like a lot of marks for the steps. Basically, it's b/5 + (4a-b)/5x = a+b/y I need the a's on one...
  8. AbbbbY

    Chemistry: Post your doubts here!

    Could you ttell me your answer to v? Would save me the trouble of going through all the steps. Edit: Nevermind. Done them all anyway. Original Solution: Fe3+ = 1.5 in 1000 so 0.15 in 100 Solution after dissolving copper several times: Fe2+ = Answer to part v/10 =0.6/10 = 0.06 Remaining Fe3+...
  9. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

    I'm pretty sure it's 1:4 __ Anyway. Was a pretty easy question tbh. Never found O Level Vectors challenging. Or anything olevel, for that matter. I thought about writing it again neatly, but I figured it was too much hassle. :p I know I've written as if I were using my foot, but if it doesn't...
  10. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

    Done it before? Like I said. I don't do questions from the books :P What's the answer to the other part? I'm not sure how to explain. It's a pretty long working.
  11. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

    o.O How off. Is it 4:21?
  12. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

    a i) -a + b ii) a iii) a + b b i) 4:25 ii) 20:25 Where's my cookie.
  13. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

  14. AbbbbY

    Maths, Addmaths and Statistics: Post your doubts here!

    If only the challenge were legible.
  15. AbbbbY

    Indeed almost done. Tbh I wanna get over it. Can't wait to see how it unfolds and where I end...

    Indeed almost done. Tbh I wanna get over it. Can't wait to see how it unfolds and where I end up landing for further edu :)
    • AbbbbY
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  16. AbbbbY

    Chemistry: Post your doubts here!

    Ummm.. See the wedges :p It has something to do with the lonepair + hybridization but I can't quite explain it. See this. The red part is the Oxygen.
  17. AbbbbY

    Chemistry: Post your doubts here!

    I've done this question so I know what precedes the question. But, this is primarily why I dislike when sections of the question are cropped out and asked. Look at the diagrams above the part you've posted. It has a benzene, a cyclohexane, a straight chain alkane (I think butane?) and a...
  18. AbbbbY

    Chemistry: Post your doubts here!

    6(ai): 3! = 6. 6(ei) 3P2 = 6 9(di): Your initial selection, i.e U, G, A or C has 4 possible selections. Once that's selected, you have 4 further possible selections. And when that's selected you have 4 final selections. 4x4x4 = 64 Remember the basic 'box' method of solving Permutations and...
  19. AbbbbY

    Football/Soccer anyone?

    In other news, strong rumors surfacing that Moyes is about to be sacked. http://www.independent.ie/sport/david-moyes-to-be-sacked-within-24-hours-as-manchester-united-boss-30204229.html...
  20. AbbbbY

    Football/Soccer anyone?

    Always hated the guy even when he wore red for Manchester. Well, right until that last minute goal against City to win the game. Beautiful. Good days. :p
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