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thechemistrycluster@y...
Apr 1, 2004 10:16 pm
5462
Dear Friends: In the past several days, we have had the membership of this group grow by several 10's 0f members, while the number of posts has vanished in the...
Any ideas, more specific than a four legged horse ridden by a jockey, of what will the Grand National? Philip ... From: Steve [mailto:steve_geo1@...] ...
Plenty of questions to be asked in chemistry i think there's no limit to how many the question wud be asked ,i have few questuions too.The basic thing i...
Hello. My name is Juanjo Serrano and I studied Chemistry in Universidad de Valencia (Spain). Now I worked at Theoretical Chemistry Group. I created two groups...
Hello Thanks dear my masters. But I can not find any document for determination Niobium in Alloy without using of instrumental analysis.(Nb = 0.2% ) Help me...
Guyz, I have a question relating to Rutherfords experiment,some of the alpha particles which were bombarded went thru and some with little deviation while some...
hi, i think i saw the word Niobium when i was doing a search on chromotropic acid using www.scirus.com. didn't have time to see what the article is all...
Dear Buddy, not that I have enough time to write a loong mail this time .... busy with a write-up on "Time-dependent Fluorescence Stokes' Shift (TDFSS)" .... I...
I covered this in a previous post. The best way to analyze for Nb, and other metals, in an alloy with a high melting point, without having to dissolve it with...
hi, i was looking through some A levels question when i saw this that stumped me. it was the calculation for the equilibrium constant using partial pressures...
Dear Buddy Love, Weren't the alpha particles deviated on close proximity to a heavy nucleus? (Didn't Lord Rutherford use gold film?). Wasn't there some quote...
Dear Jezziezz, Not quite sure about the use of "total pressure". Dalton postulated that in a mixture of gases the total pressue = sum of the partial pressures....
Dear Philip, I agree with what you wrote. the question i referred to gave the mole fraction, and the pressure of the system. i have to calculate the partial...
Buenas Dias Amigos! Just back from vacation in Mexico. Perhaps a few lines on this problem will help get my mind off of certain residual travel problems....
Yes, Jezziez, the total pressure is the same. What will differ, I hope, is the partial pressure, p, for each species. Total pressure= sum of the partial...
hi, yes, the number of moles is given. i think most probably the answer given in the book has some kind of typo-error. thanks for the clarification. but i'm...
Partial pressure is just that..partial..the total pressure equals 1parts N2, 2 parts NH3 and 3parts H2..so if the total pressure is say 1atm then the partial...
CindyMcWilliams@...
Apr 5, 2004 9:18 pm
5479
Hello, I'm supposed to explain the mechanism for the Barbier reaction in my advanced o-chem class and I cannot find the mechanism anywhere. The only article...
The Barbier reaction appears to be an obscure one, as it is not mentioned in any of my organic chemistry textbooks. However, a Google search for "Barbier...
We seem to be in a loop on this one, Jezziez. The partial pressure depends on the number of moles/mole fraction: end of story. Never trust the answers in text...
hi all, Fluorine nmr of sulfur tetrafluoride show a peak at room temperature but two triplets of equal intensity at -100C. I know that some kind of equilibrium...
Dear Jason: First off, I do not know the answer to your question. Second off, I have heard recent thinking that there is a one-electron transfer from the...
The SF4 molecule is not symmetrical, because there are two unutilized electrons on the S atom. If these two unutilized electrons are paired in a single...
No, the total pressure is the sum of the partial pressures for the individual gases. Since pressure is direclty influenced by the numbe rof mole sof the gas ,...
I ended up finding an article, "The Barbier Synthesis: A One-Step Gignard Reaction?" by Gerard Molle and Pierre Bauer that concludes, "These results...
John, The two triplets: what are the integration traces? Can you get two sets of non-equivalent fluorines with a trigonal bipyramid structure? Nothing about ...
Dear Friends: We have had a few off-topic posts by religious enthusiasts. I shall get to these as soon as I see them appear. If you must post about these...
hi, need help with one more question... see where i went wrong? the question goes this way, 1200cm3 of HI gas was allowed to disassociate and come to an...
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