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    (Original post by Arithmeticae)
    this is pretty much exactly what i've done so perhaps the numbers we're using are slightly off or something?

    ps - you might want to remove that, don't want to spoil the method for other people (if that even is the right way)
    (Original post by MozyAdam)
    I second that.

    PLEASE SHOW WHERE I HAVE GONE WRONG!!!
    [/SPOILER]
    Yes it is right maybe best to delete if you get the answer
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    (Original post by lekha2611)
    Gold Q: Because it's 2 moles of gold for every 2 moles of HCl, do you just work out the moles of gold and carry the number across to use on the HCl - you don't have to divide it to find one mole? None of my figures are being accepted
    If Gold was the one about gold. Then you are overcomplicating it. As the song goes, three wise men brought gifts. If one is something, another is another...
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    (Original post by Arithmeticae)
    this is pretty much exactly what i've done so perhaps the numbers we're using are slightly off or something?

    ps - you might want to remove that, don't want to spoil the method for other people (if that even is the right way)
    Yes, change your values in step 1 and 4. The specific heat capacities.
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    hint for Rg?
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    What is the temperature change for Rg?
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    (Original post by zhang-liao)
    Can I have another clue please ?
    another clue for gold
    Spoiler:
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    look at the largest molecule in the leftmost flask, it can be very helpful if you can find the common name for this one...
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    particulally if you find the wiki article on it
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    (Original post by jonzza_81)
    another clue for gold
    Spoiler:
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    look at the largest molecule in the leftmost flask, it can be very helpful if you can find the common name for this one...
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    particulally if you find the wiki article on it
    Done that one already

    Stuck on Rg
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    (Original post by MozyAdam)
    If Gold...
    wanna hide all that under the spoiler tag?
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    (Original post by zhang-liao)
    What is the temperature change for Rg?
    should be in the question
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    you're told the initial temperature, and you know what temperature water freezes and evaporates at


    (Original post by Arithmeticae)
    any help for rg? i can't see where i'm going wrong with my calculations atm
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    this might sound stupid, but i got stuck for ages cos i was using the diameters instead of radii in my volume equations
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    (Original post by jonzza_81)
    should be in the question
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    you're told the initial temperature, and you know what temperature water freezes and evaporates at



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    this might sound stupid, but i got stuck for ages cos i was using the diameters instead of radii in my volume equations
    Aaah, been using 120...
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    Hint for Ag please?

    Posted from TSR Mobile
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    I've just done copper-I had to just calculate it by counting...didn't take too long. Now stuck on silver, google doesn't seem to have any definitive opinions...
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    For those stuck on Rg who feel like they're missing a step
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    It takes energy just to change state (from solid to liquid, and from liquid to gas) as well as increase in temperature
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    stuck on gold plssssss!!!!

    hints pls..... I think know that one particle is cholesterol????
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    So I got to rg really easily in about 30 mins but I can't seem to do rg. Can someone give me a hint or PM me the mass because I think that might be where I'm going wrong (btw I'm happy to help anyone)


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    help with copper pleaseeeeeeee
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    Yeh, pm if you want help. To be quite honest, this month's challenge was more challenging than most. Rg was relatively straight forward once you knew what you were doing.
    One but of advice though is make sure you use the right constants. There is slight variation on the internet which van quite drastically change your answer. Don't be afraid of a huge answer too.

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    Hi guys, stuck on Cu.

    Please PM me with any hints, I've tried playing about with various numbers but it doesn't seem to be going anywhere.
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    Managed to finish all the challenges!

    Rg wasn't too bad once I realised I was missing one bit, calculations were relatively straightforward.
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    Have you got an answer for Cu yet? I've tried with tons of numbers but no luck yet!
 
 
 
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