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    (Original post by Shadowfire123)
    I just figured that out but niw I am wondering where 400 came from
    500-100=400
    The ammonia that hasn't decomposed is still present.


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    (Original post by nishofficial)
    Sorry, yes it is C. That question was very sneaky. I've learnt it as it being accelerated by an electric field. A magnetic field is used for deflection. Charged plates would act in the same way as an electric field
    i see i was thinking of c but

    whats a charged plate
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    (Original post by C0balt)
    500-100=400
    The ammonia that hasn't decomposed is still present.


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    ohh i did 80/100 times 500 which gave me 400 i dont knnow if its right to do it this way
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    (Original post by Shadowfire123)
    ohh i did 80/100 times 500 which gave me 400 i dont knnow if its right to do it this way
    when i figure out something and about to message you saying dont bother i figured it out you message than i feel bad
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    (Original post by nishofficial)
    Sorry, yes it is C. That question was very sneaky. I've learnt it as it being accelerated by an electric field. A magnetic field is used for deflection. Charged plates would act in the same way as an electric field
    any other question you are stuck on
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    'Which one of the first, second or third ionisations of thallium produces an ion with theeelectron configuration [Xe] 5d106s1? '
    h
    Can someone help? I'm so confused about this
    1
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    for AQA has a question on the history of the atom ever come up. I forgot to revise it.
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    what does it mean when it is says bonding not 100 percent ionic
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    Help
    ocr June 2010 paper question 3 d
    can someone explain this?
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    (Original post by Luciferr)
    'Which one of the first, second or third ionisations of thallium produces an ion with theeelectron configuration [Xe] 5d106s1? '
    h
    Can someone help? I'm so confused about this 1
    first find the electron configuration of xe the noble gas and take away one electron each ionisation
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    Hi I'm doing aqa chemistry as level, but there is an example in the CGP book of a shape of molecule that I don't understand: why is SO32- trigonal pyramidal?
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    could someone explain the difference between m/e and m/z on a chart and whys it used?
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    (Original post by NotoriousS)
    could someone explain the difference between m/e and m/z on a chart and whys it used?
    Same thing. e and z are the same thing just different notation

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    (Original post by Fatuma-97)
    Help
    ocr June 2010 paper question 3 d
    can someone explain this?
    Link or screenshot please


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    (Original post by Shadowfire123)
    ohh i did 80/100 times 500 which gave me 400 i dont knnow if its right to do it this way
    It is but why so you overcomplicate lol


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    (Original post by C0balt)
    It is but why so you overcomplicate lol


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    i dont know first time doing a question like this i hate volume gas
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    (Original post by bob smith 23)
    Hi I'm doing aqa chemistry as level, but there is an example in the CGP book of a shape of molecule that I don't understand: why is SO32- trigonal pyramidal?
    draw it and you ll understand
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    10 In an experiment, 1.226 g of potassium chlorate(V), KClO3, was heated.
    A mass of0.320 g of oxygen gas, O2, was collected.2KClO3(s) o 2KCl(s) + 3O2(g) Use the molar mass of KClO3 = 122.6 g mol−1 and relative atomic mass O = 16. The percentage yield of oxygen in this experiment is
    A 17.4%
    B 26.1%
    C 66.7%
    D 100%

    HELP PLEASE!
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    (Original post by Shadowfire123)
    i see i was thinking of c but

    whats a charged plate
    Im not completely sure, Edexcel must just be testing ability to think outside the spec and charged plate would be a more correct answer than the others
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    Anyone know what the crystal structure of ice is - macromolecular due to all the hydrogen bonds forming?
 
 
 
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