Re: What is the exact value of a mole?

From: Dr_Dickie (Dr_Dickie_at_chembench.com)
Date: 12/28/04 

Date: Tue, 28 Dec 2004 12:47:32 -0500

"Richard Schultz" <schultr@mail.biu.ack.il> wrote in message
news:cqqt0p$edi$2@news.iucc.ac.il...
> In article <20041227155252.23417.00002524@mb-m03.aol.com>, SNUMBER6
<snumber6@aol.com> wrote:
>
> :>In MY world, 9.9 is not the same as 10.0, your mileage may vary.
> :>Accuracy and precision are NOT THE SAME!
> :
> : Exactly ...
>
> The two of you seem not to understand the meaning of error bars.

Throws up hands in frustration and runs screaming away.

>
> : Schultz seems to think that a series of measurements of a property that
> : has the best precision also the most accurate answer ...
>
> What part of my repeatedly stating that a highly precise measurement can
be
> very inaccurate did you fail to understand? I realize that you suffer
> from an inability to *write* coherent English, but until this point I
> had always assumed that you could at least *read* it.
>
> : I have seen this very often in ICP analysis ... versus AA analysis ...
> : Whereas the ICP gave wonderful precision ... background correction
killed the
> : accuracy due to an unrecognized interfering element ... AA ... not
affected
> : by the same ... belched out the correct answer ... though not as precise
...
>
> This is yet another false analogy. No one to my knowledge is disputing
the
> claim that a measurement can be precise but inaccurate.
>
> Or to put it another way: how did you know that the AA analysis
> gave the correct answer?
>
> -----
> Richard Schultz schultr@mail.biu.ac.il
> Department of Chemistry, Bar-Ilan University, Ramat-Gan, Israel
> Opinions expressed are mine alone, and not those of Bar-Ilan University
> -----
> "Logic is a wreath of pretty flowers which smell bad."

You sir, know everything; therefore you can learn nothing. I feel sorry for
you. I feel even worse if you are allowed to teach students.
I am done with you.

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