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    (Original post by metrize)
    For the second bit i put 5/2(o)
    Second bit?
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    (Original post by rosemondtan)
    Guys for the propane-1,2-diol question, was the organic product formed in part a a carboxylic acid-ketone combination and for the alternative organic product it's a aldehyde-ketone combination?
    thats exactly what i put
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    (Original post by smiley444)
    Why was a thin layer of platinum used to coat the catalyst ?
    I put as they're expensive metals and it's still enough for the pollutants to react on 😬
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    How many marks was it for the aldehyde-ketone combo? I said it is cost-effective to use thin layer of catalyst. For the mass spectrometry I said they both form same ions.
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    (Original post by smiley444)
    Why was a thin layer of platinum used to coat the catalyst ?
    I put, For a larger surface area, therefore captures more Pollutants. Made sense to me but idk.


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    Anyone do the resit


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    (Original post by vignesh1234567)
    How many marks was it for the aldehyde-ketone combo? I said it is cost-effective to use thin layer of catalyst. For the mass spectrometry I said they both form same ions.
    idk

    and yep exactly what I wrote for for the catalyst and mass spectrometry Qs.
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    Predictions on grade boundaries for both papers?
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    So guys how did y'all find the as chemistry exam on june 10th i found it so effin hard
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    (Original post by vignesh1234567)
    How many marks was it for the aldehyde-ketone combo? I said it is cost-effective to use thin layer of catalyst. For the mass spectrometry I said they both form same ions.
    I don't think they form the same ions, they just both had the same molecular formular and so they had the same molecular mass.
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    (Original post by Metal Warrior)
    I don't think they form the same ions, they just both had the same molecular formular and so they had the same molecular mass.
    It was 2 marks right. What the 2 points you made?
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    (Original post by Metal Warrior)
    I don't think they form the same ions, they just both had the same molecular formular and so they had the same molecular mass.
    yeah that's what I said.
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    (Original post by CaiusMartius)
    yeah that's what I said.
    Did you just state that they had 'the same molecular formula'?
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    (Original post by Metal Warrior)
    I don't think they form the same ions, they just both had the same molecular formular and so they had the same molecular mass.
    Yup I said they had the same molecular formula and same number of each atoms (C H O) but different functional groups
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    (Original post by SANTR)
    Did you just state that they had 'the same molecular formula'?
    yeah, had done a basically identical question the night before lol
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    (Original post by rosemondtan)
    Yup I said they had the same molecular formula and same number of each atoms (C H O) but different functional groups
    What did you write for the question on why CO2 etc absorb infra red radiation?
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    did anyone say that 218 mg magnesium was required to fully react and so 396mg was in excess
    also what about the last graph question about volume of H2 produced?
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    (Original post by julesaquilina)
    I said that honeycomb has a large SA and a thin layer wouldnt decrease the SA so the catalyst would still be effective
    I also put that platinum is expensive
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    absorbs a high amount of energy or sumn I looked in the book and it says something like that too
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    What did people write for the anti bumping granules Q?
 
 
 
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