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    (Original post by Albsy)
    Do you know where zinc was in the table? I picked something from the lowest down in the table, don't think that was zinc though....
    Zinc was at the top, it went from most negative to most positive going down the table
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    (Original post by jamest92)
    I said H2 because it doesnt have any lone pairs so can not coordinatly bond
    yey!
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    (Original post by happi_minnie)
    i got something like 53.7%
    thats right i got like 47 percent some reason

    i did moels of dichromate x 6 to get moles of iron

    then found original moles of iron

    then took away both then divided by original moles lol
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    53.7% yayyy
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    what did people get for the ?G answer?
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    what did people get for the delta G answer?
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    i got -51 i think for the enthalpy of solution..

    think i got 20.5ish (cant remember) for the delta G...what were the units?

    i put J k-1 mol-1

    not sure?
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    (Original post by Zakir)
    i got -51 i think for the enthalpy of solution..

    think i got 20.5ish (cant remember) for the delta G...what were the units?

    i put J k-1 mol-1

    not sure?
    Depends how you worked it out if you divided the entropy by 1000 then you converted both delta H and TdeltaS to having units of kJ mol-1 and so that was the units of delta G
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    (Original post by mrppaulo)
    Depends how you worked it out if you divided the entropy by 1000 then you converted both delta H and TdeltaS to having units of kJ mol-1 and so that was the units of delta G
    i wasnt sure so i got 20500ish J k-1 mol-1

    and then ALSO put 20.5 underneath that...just in case lol
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    (Original post by Zakir)
    i got -51 i think for the enthalpy of solution..

    think i got 20.5ish (cant remember) for the delta G...what were the units?

    i put J k-1 mol-1

    not sure?
    Supposed to be JK-1Mol-1

    But did you convert delta H into J?

    I got 20.5x10^3 or something
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    (Original post by Zakir)
    i got -51 i think for the enthalpy of solution..

    think i got 20.5ish (cant remember) for the delta G...what were the units?

    i put J k-1 mol-1

    not sure?
    + 30 something, i got.

    and KJ per mol
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    (Original post by Biologyman)
    Supposed to be JK-1Mol-1

    But did you convert delta H into J?

    I got 20.5x10^3 or something
    Definately KJ per mol mate
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    (Original post by Biologyman)
    Supposed to be JK-1Mol-1

    But did you convert delta H into J?

    I got 20.5x10^3 or something
    yeah i did...i put both down (in KJ and J)

    so u got the same as me
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    (Original post by bluepanda123)
    It is colourless. Solid sulphur is yellow
    I put choking gas .. is that correct ?
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    (Original post by Zakir)
    yeah i did...i put both down (in KJ and J)

    so u got the same as me
    I meant Jmol-1 sorry not JK-1Mol-1 that's the units for entropy.


    (Original post by Willyg11)
    53.7% yayyy
    Just checked the last answer on my calculator and I got 53.7% and I'm pretty sure that's what you get if you do it wrong, I'm 99% sure I did it wrong unless by pure coincidence however I did it got the right answer despite the wrong method entirely.
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    Does sulfur dioxide have a rotten egg smell?
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    (Original post by Tiger_Lilly92)
    Does sulfur dioxide have a rotten egg smell?
    Yeah
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    (Original post by Biologyman)
    I meant Jmol-1 sorry not JK-1Mol-1 that's the units for entropy.




    Just checked the last answer on my calculator and I got 53.7% and I'm pretty sure that's what you get if you do it wrong, I'm 99% sure I did it wrong unless by pure coincidence however I did it got the right answer despite the wrong method entirely.
    I think we are right as alot of my friends got that too

    Moles of Fe2+= 6 x moles of dichromate

    work out mass then just work out as a percentage of the other thing.
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    (Original post by Biologyman)
    Yeah
    So i'd get a mark for the observations ?
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    (Original post by Biologyman)
    Yeah
    No, that's Hydrogen Sulfide (H2S)
 
 
 
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