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  1. A

    Help in a chemistry question??

    A number of alcohols with the formula C4H10O are separately oxidised. Using 70 g of the alcohols a 62% yield of organic product is achieved. What mass of product could be obtained? 1 42.2g of butanone 2 51.6g of butanoic acid 3 51.6g of 2-methyl propanoic acid pls what is the right answer?
  2. A

    expected grade in chemistry AS may/june 2012?

    what could be my grade if achieved the following grades? P1 25 (B) p2 40(B) p3 23 (B or a C ) can these land me a B?
  3. A

    Chemistry AS expected grade?

    What could i get from the following? P11 29(A) P31 21 (C) P21 38-40 (C high)??
  4. A

    A question on grade boundries?

    IN chemistry AS P1 B(high) P2 C(high) P3 C what could be an overall a B or C is much nearer to this estimation
  5. A

    Expected GT for chem AS p21??

    It can be from 45-47 as it was harder this year than the previous year!!
  6. A

    What are the approximate percentage for achieving A in biology AS edexcel?

    I heard it's changing every year but it's within the range of 71-79% am i right?
  7. A

    A question about AS biology 2012 grade boundries?

    what are the overall grade for the following components Unit 3 B Unit 1 A Unit 2 B
  8. A

    Chemistry AS expected grades?

    what grade could be awarded for the following components? B in p1 C in p3 C in p2
  9. A

    Grade boundries for AS edexcel biology?

    what could be the grades needed in each component for getting an A in jun 2012? Any expectations?
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