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    (Original post by KeziaKarunwi)
    it goes down x
    Thank you, I stress a lot over each answer you see x
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    Anyone reckon what the grade boundaries might be?
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    What did you guys get for the first 6 mark question about diamond and ionic ?
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    (Original post by keepyourapology)
    Anyone reckon what the grade boundaries might be?
    53 A* ?

    (Original post by L0st45)
    I stated it exactly how it was in the revision guide - 1/1840. I did put in brackets underneath my answer 'negligible' as well though.
    Yeah I said negligible too. My revision guide says 1/1836 so we must have different ones

    (Original post by Fez_Shabbir)
    Easy???? :0
    Yeah
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    (Original post by caitlinford3)
    very true, I just didn't realise my experiment was legit hahaha
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    yep you could just make a few adjustments to this and it would be fine, this was on a chemistry past paper and i forgot to say light the magnesium which im annoyed about as i nearly wrote it
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    (Original post by Fez_Shabbir)
    Is a period going down or across and what do you reckon it is for a C grade?
    the grade boundaries wouldbe 24-27 for a C
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    (Original post by chrlhyms)
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    yep you could just make a few adjustments to this and it would be fine, this was on a chemistry past paper and i forgot to say light the magnesium which im annoyed about as i nearly wrote it
    I didn't say that either dw!! At least the rest of the paper made up for it
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    (Original post by caitlinford3)
    I didn't say that either dw!! At least the rest of the paper made up for it
    yeah you could loose 6 marks and still get A* doesn't matter
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    (Original post by KeziaKarunwi)
    the grade boundaries wouldbe 24-27 for a C
    Wow thats not to bad tbh
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    Was that question about the percentage mass of nitrogen to do with the formula: NH4NO3?
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    (Original post by lopa69)
    What was the question everyone got 35% as the answer? I got 30% because i must have misread it, also what was the question to do with finding 'how many tonnes can fill 500 tonnes' something like that.
    It was 126
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    What did you guys write for thw concentration question?
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    (Original post by caitlinford3)
    0.7 - 0.42 to get 0.28 (mass of oxygen)

    0.28 / 16 = 0.0175 (O)
    0.42 / 24 = 0.0175 (Mg)
    Then divide each by the smallest (but since they're the same just divide by themselves)
    0.0175 / 0.0175 = 1 (O)
    0.0175 / 0.0175 = 1 (Mg)
    Ratio is therefore 1:1
    So it's therefore MgO
    How many marks out of 6 could doing this get you?
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    (Original post by chrlhyms)
    yeah you could loose 6 marks and still get A* doesn't matter
    Yeahhh! lol just terrified for the 3's now
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    (Original post by caitlinford3)
    Don't think so. Text book example is MgO
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    This is just what we've been taught, to balance equations for empirical formula.
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    Noooo i only wrote 126 instead if 126.3 😭😭😭
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    (Original post by L0st45)
    Was that question about the percentage mass of nitrogen to do with the formula: NH4NO3?
    It was 35%
    Working out:
    2×14=28
    28÷80=0.35×100=35%

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    For the 500 tonnes one I put down 144 because I rounded too early! All I wanted was an A* in Science and that's proving to be impossible...


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    (Original post by Penguin_S)
    What did you guys write for thw concentration question?
    greater concentration means more particles are in the same volume therefore more frequent collisions and greater rate of reaction
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    (Original post by KeziaKarunwi)
    greater concentration means more particles are in the same volume therefore more frequent collisions and greater rate of reaction
    I said that yayayay thank you for answering

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