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    (Original post by milutin767)
    It could never go above 85 but I guess around 82-83 because of difficult stoichiometry questions
    Am i wrong in thinking that this is still really high?
    i though average was 75
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    (Original post by GawdHeresEmmie)
    No2 itself is an nitrogen oxide
    I just remembered I put down burning nitrated fuels ie nitroethane as well and thunderstorms

    Surely that would count? Lolololol
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    (Original post by Saywhatyoumean)
    Also I got -281 for the enthalpy question I think I did something wrong :/


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    I got +281 ..
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    okay so im really bad at maths so i wanna see what everyone else got for some of these calculations..
    enthalpy of reaction i got -0.145
    + 25% mass of Mg 119.7g
    enthalpy of formation +281
    bond enthalpy of C double O +1062
    weird petrol one i got upto that 1l fuel gave 3l CO2..
    and number of monomers 596
    ???? am i way off or..
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    For the E/Z question did it ask to show it as skeletal or normal??
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    (Original post by Manliker)
    For the E/Z question did it ask to show it as skeletal or normal??
    skeletal i think
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    For the first question did the organic compounds remain cyclic or go to straight chains?
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    (Original post by sssbbb)
    For the first question did the organic compounds remain cyclic or go to straight chains?
    I'm pretty sure it remains cyclic.
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    Does anyone remember the answer to the last question on the first page?

    I remember the question asking for a condition for the reaction and I put H3PO4.
    My friend said they wanted ALL conditions, so acid AND high temp + pressure?

    What did you put, cos that's the one question that's annoying me, despite being only one mark.
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    (Original post by NadeemKha_Arab)
    Does anyone remember the answer to the last question on the first page?

    I remember the question asking for a condition for the reaction and I put H3PO4.
    My friend said they wanted ALL conditions, so acid AND high temp + pressure?

    What did you put, cos that's the one question that's annoying me, despite being only one mark.
    I put H2SO4 catalyst and heat

    Posted from TSR Mobile
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    (Original post by NadeemKha_Arab)
    Does anyone remember the answer to the last question on the first page?

    I remember the question asking for a condition for the reaction and I put H3PO4.
    My friend said they wanted ALL conditions, so acid AND high temp + pressure?

    What did you put, cos that's the one question that's annoying me, despite being only one mark.
    It's an acid catalyst (commonly H2SO4) and heat. H3PO4 might still get u the mark. I'm pretty sure we didn't need to be specific about pressures and temperatures because it wasn't ethene that was reacting with water. However it did say 'H2O' and not steam, so maybe they might say allow any temperature above 100deg.
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    H3PO4 and H2SO4 always get the mark
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    (Original post by mattyk5)
    skeletal i think
    Omg it was skeletal?!?!?! Can anyone confirm this???
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    (Original post by Bgxx)
    Omg it was skeletal?!?!?! Can anyone confirm this???
    not sure if they specified but I did skeletal
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    (Original post by Manliker)
    Yes! I got -346 i did exactly that! Hope it's right
    I though it was 250cm of solution, so isn't 250 the mass
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    (Original post by monpat)
    not sure if they specified but I did skeletal
    Don't think they specified I displayed
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    (Original post by NadeemKha_Arab)
    Does anyone remember the answer to the last question on the first page?

    I remember the question asking for a condition for the reaction and I put H3PO4.
    My friend said they wanted ALL conditions, so acid AND high temp + pressure?

    What did you put, cos that's the one question that's annoying me, despite being only one mark.
    They would have wanted: H3PO4 catalyst, 6MPa, 300 degrees Celcius. That's what I learned for the conditions... Pretty sure that's right.


    Edit: this may only be for the hydration of ethene. (May not apply to that question) but definitely a high pressure and temperature are needed!
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    (Original post by loren.o)
    I got +281 ..
    I got -281. They said to calculate the enthalpy change of formation, but they gave us combustion data, so the arrows would have been pointing down, instead of up.
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    (Original post by Bgxx)
    Omg it was skeletal?!?!?! Can anyone confirm this???
    Yea it said skeletal. I realised after I drew the displayed formula lol then I had to rub it out.
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    (Original post by rocketp95)
    I though it was 250cm of solution, so isn't 250 the mass
    It said something about each cm is 1g
 
 
 
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