arrow4 Comments
  1. treeboy
    Jun 22 - 4:13 pm

    The $800 question (CO2) was too easy; more fitting for celebrity jeopardy ;-)

  2. Vitaliy
    Jun 22 - 8:09 pm

    Great, thanks!
    Think, everything was too easy (except maybe eels, but easy as well). Even the schoolboy could answer :p

  3. azmanam
    Jun 22 - 8:48 pm

    The anhydride clue isn’t really correct, though, is it?

    I think the term they were looking for is desiccant (or more generally a dehydrating agent).

    An anhydride is a organic functional group with two acyl (carbonyl) groups bound to a central oxygen atom.

    Looking at some dictionary definitions, one says an anhydride is ‘a compound formed in a reaction resulting in the removal of water.’ Unless you knew the workings of the mechanism, I can see how this could be confusing. Two carboxylic acids can combine in a reaction to form an anhydride. During the mechanism, a molecule of water is removed from the reactants in the formation of the anhydride, but the net process (ironically) produces a mole of water for every 2 moles of acids reacted.

    2 RCOOH –> RC(O)OC(O)R + H2O
    (In this reaction, phosphorous pentoxide is commonly added to sop up the produced water and is utilized as the (correctly used) dehydrating agent.

    Another definition is perhaps more clear, ‘A compound from which water has been abstracted.’ That’s maybe a bit better, but perhaps still somewhat of an oversimplification.

    I’m kind of disappointed in that clue.

  4. See Arr Oh
    Jun 24 - 9:27 am

    I mean, c’mon, where’s the questions on Curtin-Hammett? Eigenfunctions? Crystal packing? :)

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