[alt-photo] Re: Stoichiometry for the nonscientist

[Loris Medici]

  OK, if think so... I definitely wouldn't want to argue on such a 
trivial issue - sorry for my original remark, I just retract it...

Have a nice weekend,
Loris.

31.07.2010 00:42, Katharine Thayer yazmış:
>> Loris wrote:
>>
>> FWIW, an equally lucid explanation (for all: mole, molarity,
>> stoichiometry) was already present in the page I have provided to David:
>> http://environmentalchemistry.com/yogi/reference/molar.html
>
> I hadn't noticed that link before, but I've gone there now, and I 
> can't agree that this is a lucid or helpful explanation at all; I 
> think it's confusing and would be especially confusing to someone who 
> didn't understand the concept of gram-molecular weights to start with. 
> The author of the page defines a mole not as the molecular mass of 
> something expressed in grams, but as 6.022x10^23 of *anything.* She 
> says for example that a mole of bananas would be 6.022 x 10^23 
> bananas, and the way you would find out how much a mole of bananas 
> would weigh would be to get an average weight of a banana and then 
> multiply that by 6.022 x 10^23. This is *not* a helpful way to explain 
> molarity or stoichiometry, imo, it would just confuse the reader 
> rather than enlightening them.