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  1. Ysph06

    CHEMISTRY JUNE 2014- ANSWER GUESS

    You are asked to find the mass of butan-2-ol required to produce 3 g of butanone i think. ( i dont really remember the question) (3/72.1) * 74.1 = 3.08g (x/3.08) * 100 = 64 x= 1.97g <-- If you take 3.08 as 100 % yield (3.08/x) * 100 = 64 x=4.82g <-- If you take 3.08 as 64 % yield that's...
  2. Ysph06

    BIOLOGY UNIT 3 DISCUSSION

    Easy. :cool:
  3. Ysph06

    IAL Unit 3B Sciences Support Group

    https://www.dropbox.com/sh/zlbyy5idfs01zpa/avWiug6MJn/Biology/Biology%20-%20Unit%203B You can find it there
  4. Ysph06

    Physics: Post your doubts here!

    Can someone help me out with this ? http://i.imgur.com/9NZygt0.png It's a multiple choice question, the answer is D, but I don't know why. I need a clear explanation, anyone? From Edexcel A-Level Physics May 2009 Unit 3B, Q4.
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