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    Wasn't the 0.2 the mass used in a different experiment though?


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    (Original post by pharmhopeful16)
    Wasn't the 0.2 the mass used in a different experiment though?


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    Honestly mate, no one knows anymore😂. The maths in chemistry AS this year has been harder than C1 :/


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    (Original post by RasputinReborn)
    Honestly mate, no one knows anymore😂. The maths in chemistry AS this year has been harder than C1 :/


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    I completely agree 😂 id take another C2 over the maths in chem. Someone put on Twitter how they've lowered to boundaries. I also heard a school gave the paper to a teacher with a PHD in maths and he couldn't do them.


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    (Original post by pharmhopeful16)
    I completely agree 😂 id take another C2 over the maths in chem. Someone put on Twitter how they've lowered to boundaries. I also heard a school gave the paper to a teacher with a PHD in maths and he couldn't do them.


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    What? No way, PhD in maths? 😂 well tbf, I doubt maths teachers do as much converting between units as us😂


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    (Original post by RasputinReborn)
    What? No way, PhD in maths? 😂 well tbf, I doubt maths teachers do as much converting between units as us😂


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    True 😂 but yeah apparently anyway. The chem teachers disagreed with each other on like 15 marks too


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    (Original post by pharmhopeful16)
    I completely agree 😂 id take another C2 over the maths in chem. Someone put on Twitter how they've lowered to boundaries. I also heard a school gave the paper to a teacher with a PHD in maths and he couldn't do them.


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    Wouldn't be surprised if overall for Chemistry this year it was A)60% B)50% C)40% etc... usually from what I can tell it's about A)75% B)65% C)60% etc... It's difficult for anyone to be able to predict grade boundaries but the papers this year were considerably more difficult than any past paper I revised from the old spec. I guess it all depends on how people have really done.
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    Anyone got an answer between 366/367 for O-H enthalpy?
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    (Original post by ChemSinceDaay...)
    Anyone got an answer between 366/367 for O-H enthalpy?
    It was C-H and I had 300 something. Though according to the Internet we're both wrong as it is 413kJmol-1. Do you reckon WJEC used its own average bond enthalpies since you could memorise them prior to an exam and just answer a 4 marker without any working out?


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    Both enthalpies are different for every compound guys. When you look online that is the average bond enthalpy so the energy required to break that bond in every single compound divided by how many compounds it is in. So for our compound it could very well have been 300 something. That's what I got also.
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    (Original post by Elliottmanwaring)
    Both enthalpies are different for every compound guys. When you look online that is the average bond enthalpy so the energy required to break that bond in every single compound divided by how many compounds it is in. So for our compound it could very well have been 300 something. That's what I got also.
    I think my answer was 388 or 389, I remember rounding up to one of them because the O2 was 3.5 so it gave an answer in decimals that you had to round up. Do you reckon sticking 3.5 in front of O2 gets a mark? 😂


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    Can someone upload the paper
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    (Original post by steven7891)
    Can someone upload the paper
    And an unofficial mark scheme
 
 
 
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