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    (Original post by examinationtsr)
    For Cu:
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    Write down the three element and the number of the so that all charges are balanced (on each element
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    e.g. X2Y3Z
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    Get correct no. of each element so that overall charge on salt is 0
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    im stuck on the third one.
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    (Original post by johnnypong)
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    thats just the "humorous" way they tell you you're wrong...not a clue.

    The length has to be in decimetres, and on the diagram the radius of the bottle is given, not the diameter (which is what you need for the path length)
    More help for gold
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    (Original post by A84)
    im stuck on the third one.
    Sorry for late reply. It is to do with types of bonding electrons (e.g pi bond).
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    It gives you sigma and pi. What are the others? And it can have more than one type of bond in the moleule.
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    i still didnt get it ive like given up for the first time... if u can explain in detail it will be gr8 but otherwise its ok
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    Any ideas for the new silver?
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    any help with silver is appreciated
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    Help with silver please...Does the leaf in the back have anything to do with the answer? I researched all over :'(
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    stuck in silver too
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    Can someone please help me on Rg, I know what it is but I don't know how to decode it
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    (Original post by Bruhda)
    Help with silver please...Does the leaf in the back have anything to do with the answer? I researched all over :'(
    Stuck on it too...
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    the molecule is Porphyrin which forms part of chlorophyll and haemaglobin amongst other things. It's also a photosensitiser used to treat fungal nail infections...but I can't unlock the answer.
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    @Satilla plz help in silver..
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    (Original post by A84)
    @Satilla plz help in silver..
    The funnel one?
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    (Original post by Satilla)
    Can someone please help me on Rg, I know what it is but I don't know how to decode it
    same i'm stuck on this question and have no idea what to write for the answer. i don't know how long or short the answer is supposed to be, all i know is that it is linked to a special message

    (Original post by johnnypong)
    Stuck on it too...
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    the molecule is Porphyrin which forms part of chlorophyll and haemaglobin amongst other things. It's also a photosensitiser used to treat fungal nail infections...but I can't unlock the answer.
    here's a hint
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    focus on the apparatus in the middle of the picture instead and you should be able to find the answer.
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    (Original post by wizardryj)
    same i'm stuck on this question and have no idea what to write for the answer. i don't know how long or short the answer is supposed to be, all i know is that it is linked to a special message



    here's a hint
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    focus on the apparatus in the middle of the picture instead and you should be able to find the answer.
    I did focus on the apparatus... but it doesn't help... I even tried the name of the chemist after which apparatus was named.... any further help plz
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    Focus on the molecule shown in ball-and-stick form in the image - It is porphyrin, a key precursor to the production of chlorophylls in plants and bacteria... the same scientist who researched plant pigments has a piece of equipment named after him.
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    Help in Rg please....
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    I figured what compounds the codes represent, and that it is about DNA, but how does that translate to a sentence? Help!
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    Help in Rg please....
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    I figured what compounds the codes represent, and that it is about DNA, but how does that translate to a sentence? Help!
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    help with entry?
 
 
 
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