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    tbh I don't actually care :rolleyes:
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    Maybe you didn't my memories not to great for this paper.

    2FeSO4 -> 2SO2 + O2 + 2FeO
    If the equation was that then don't double it but I'm not too great with predicting equations. Using some estimate values that I think are close to the real ones I get about 80%, but thats if the mass of impure material was about 0.28g ish, and I thought it was 2.8g ish. Using 2.8g though worked out completely off of either answer. Argh, someone usually remembers all the numbers and I usually work it through to reassure myself.
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    I think it was that but even then the ratio's 1:1.

    It was 2.18something...

    I think....

    I think i remember finding the moles of SO2 Gas produced, then mdoing something to it...but i can';t remember what.
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    What was the electron configuration of Mo3+ and why?
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    Think it was [Kr]4d3.

    The reasoning that it was a transition metal is because it had a partially filled D-Subshell.
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    Just take 3 electrons...i couldn't remember whether the 5s was at a higher or lower energy level than 4d.
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    The ratio from the equation was definitely 2:1 so you had to double it. Can't remember what equation was but answer was something like 76.7%. I think it may have involved both SO2 and SO3 can't remember!
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    2FeSO4 -> SO3 + SO2 + 2FeO
    But that isn't balanced!
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    You know in trends and patterns,

    ther was some half equation of iron thing and u had to work out the overall equation
    did u guys multiplied the top section by 3 and cancel the electons on each side
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    (Original post by Nazmoth)
    The ratio from the equation was definitely 2:1 so you had to double it. Can't remember what equation was but answer was something like 76.7%. I think it may have involved both SO2 and SO3 can't remember!
    No, it wasn't. At least i'm almost 99% sure it wasn't

    Even if it was you'd definately get ECF.

    Was i right on the Electronic configuration one?
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    and thermal decomposition of

    2Mg(NH3)2----> 2MgO + O2 + 4NO2

    i got this i think
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    +ve as energy is put in to decompose something.
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    (Original post by uksangho2000)
    and thermal decomposition of

    2Mg(NH3)2----> 2MgO + O2 + 4NO2

    i got this i think
    So where did your oxygen come from? :eek:
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    (Original post by andiroo)
    So where did your oxygen come from? :eek:
    It said on the question it produces nitrogen dioxide, oxygen and magnesium oxide
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    (Original post by uksangho2000)
    You know in trends and patterns,

    ther was some half equation of iron thing and u had to work out the overall equation
    did u guys multiplied the top section by 3 and cancel the electons on each side
    It was molybdenum I thought...But yeah it was either x3 or x2 (can't remember).
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    (Original post by uksangho2000)
    and thermal decomposition of

    2Mg(NH3)2----> 2MgO + O2 + 4NO2

    i got this i think
    Where's hydrogen gone?
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    how many potassium were we supposed to put in the balanced equation i but 1 but now im thinking the iron charge could have been -2
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    K2
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    (Original post by Andy Conda)
    Where's hydrogen gone?

    Oh mabye it was Mg(NO3)2 hmmm cant remember the quetion now! im confused
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    (Original post by uksangho2000)
    Oh mabye it was Mg(NO3)2 hmmm cant remember the quetion now! im confused
    Thats what i was hinting at, hence the 'wheres the oxygen'
 
 
 
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