Eric Neilsen (e.neilsen@worldnet.att.net)
Wed, 12 May 1999 10:36:59 -0500
"Jeffrey D. Mathias" wrote:
> And here I would like to question the FW of Ferric Ammonium Oxalate as
> 430.85
> From solid state physics book periodic table:
> N 14.007
> H 1.008
> Fe 55.847
> C 12.011
> O 15.999
> It follows that:
> NH4 18.039
> C2O4 88.018
> H2O 18.015
> (NH4)3Fe(C2O4)3-3(H2O) 428.063
> Where have I gone wrong? (If indeed I have.)
>
I didn't carry it to .001 weights. I stand corrected. I rounded off a bit.
Most scales that the average photo user has will not allow a precise measure
of weights of Chlorides that we use since we are looking a 3g samples of
palladium chloride, not 3.000g.
I did see that when I ran the figures against Mr. Wares papers, but I let it
go. We were much closer than before and didn't think that it would matter
that much.
Sorry for the error.
-- Eric J. Neilsen 4101 Commerce Street, Suite #9 Dallas, TX 75226 214-827-8301 http://home.att.net/~e.neilsen
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