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    (Original post by Irmakozturk)
    aaaah i wasn't sure at all but it put

    OHCH2CH2CH(NH2)CH2CH2CH2OH

    i dont remember exactly where the oxygen on the rhs was tho but all my numbers matched so idk if its right or coincidence
    OHCH2CH2CH2(NH)CH2CH2CH2OH i think, cus if you do NH2, N would be positive no ?, im freaking out cus i did it with NH but still put + on the N, i remembered me erased it, but i got some kind of deja vu that i put + sign back on again
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    (Original post by KB_97)
    Attachment 549879

    I got this for the last question. Compound J I think. Anybody else get this?
    meeee 🙋🙋
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    The unofficial make scheme Google document is a hot mess. I'm gonna put what I got the last structures on here. If you got the same as me thumbs up if not say what you got and we'll see who agrees/disagrees
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    (Original post by TSR121)
    Guys for the ketone on the last question was it 5 carbons in a row then the c=o on the middle carbon ?
    I put it in the middle one too! i wasn't sure whether it was specific to anywhere in the middle
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    Name:  image.jpeg
Views: 224
Size:  18.5 KB I got this for F
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    (Original post by RealistZ)
    It's propanoic acid CH3CH2COOH Mr=74
    The second product of the ethanoic anhydride reaction was ethanoic acid
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    Name:  image.jpeg
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Size:  14.1 KB I got this for G
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    (Original post by WhatALad)
    They did 3/94=0.032
    0.032/0.61=0.0528
    0.0528*135=7.1
    It's 0.032* 0.61
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    (Original post by ali_t9001)
    The second product of the ethanoic anhydride reaction was ethanoic acid
    You are thinking of a different question.
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    Name:  image.jpeg
Views: 181
Size:  14.5 KB I got this for H (m/r of 74. Propanoic acid)
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    Guys how's 2.66 the correct answer? I got that first but then when I did the inverse is didn't give me 61% so I wasn't sure whether that was correct.. I changed my answer to 7.14 cause then I ended up getting a 61% yield but hey if 2.66 is correct then ;(
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    People have got to remember highest ever boundary was 51/60, paper was average in hardness so A boundary probably around 48/60.
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    Anyone got 2.86g for the mass of compound A?
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    Name:  image.jpeg
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Size:  12.6 KB I got this for the ester I
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    (Original post by student.1997)
    Was compound J (CH3)3C=oCH3
    no, (CH3)3CH2OH i believe
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    Name:  image.jpeg
Views: 305
Size:  14.0 KB I got this for J
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    What was the proton NMR splitting pattern? I think I got doublet multiplet and triplet?
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    Will you get ecf of you got f wrong?
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    Can someone do a proper unofficial mark scheme please
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    (Original post by KB_97)
    Name:  image.jpeg
Views: 224
Size:  18.5 KB I got this for F
    Is displayed formula okay?
 
 
 
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