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Messages 13706 - 13737 of 13930   Oldest  |  < Older  |  Newer >  |  Newest
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13706
Hi, please if any have the manual of MHS-10 please can send it to me or tell me the name of site which if can download from it. thanks...
awaad
awaad_2000
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Apr 2, 2009
8:05 pm
13707
Hi, I was reading an article yesterday and came across the remission spectrum of a compound. This is the first time I heard of a remission spectrum. What is it...
Lance Corey
ld_corey
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Apr 3, 2009
3:11 pm
13708
When you do drink medicine that has +Na it is said that you can raise your blood pressure. But when you drink medicine that has +K it is said that it does not...
Antonio
galopus
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Apr 4, 2009
9:11 am
13709
... Hi antonio,I think it is true.I know that the +Na is an internal cation(in our cell) but +K is out of our cells.( I hope this help to you) Do you know...
parisarazie
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Apr 4, 2009
11:18 am
13710
Hi Antonio, İ think this is true. this situation deal with Na+  K+ pomp  circulations in our  cell. ... From: parisarazie <parisarazie@...> Subject:...
tarik aral
tarikaral21
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Apr 4, 2009
11:26 am
13711
I think it's the reason, but the contrary: the Na+ is the extracellular cation, and K+ is the intracellular one. Thus, if you have a diet with high Na+ ions,...
ludwig_julca_83
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Apr 6, 2009
3:56 pm
13713
i am doing a lab and want to check these.... NO3- ox#: o2=-2 o2=-2 o2=-2 N=5 Formal Charges o2=-1 o2=-1 o2=0 N=-1 bond angles: 120, 120, 120 H3O+ H=ox #=+1 ...
oceansember
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Apr 14, 2009
4:06 am
13714
Hi, I'm not sure about the formal charges, but I can comment on the rest. NO3- okay H3O+ okay PF5 P = +5; since the molecule is neutral, then the 5 negative...
Lance Corey
ld_corey
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Apr 14, 2009
1:54 pm
13715
How do ionic subtances ...ie soluble in water.. ..act if a strong magnetic field surrounds them during a reaction? I'm thinking of Iron etc john...
zocor@...
zocor...
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Apr 14, 2009
2:39 pm
13716
There should not be much effect at all, UNLESS the dissolved substances in water have unpaired electrons, i.e. are paramagnetic, as demonstrated by ESR spectra...
John W
johnwwxtraconz
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Apr 14, 2009
3:39 pm
13717
thank you!! ... From: Lance Corey <ld_corey@...> Subject: [The Chemistry Cluster] Re: can anyone check these oxidation numbers, formal charges, and bond...
laura bollmann
oceansember
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Apr 14, 2009
4:13 pm
13718
Can anyone tell me is sulfur dioxide is a compound, heterogeneous mixture, or a homgeneous mixture?   Also, what method do I use to get the mass number of...
Kelly-Rabiahtu Miles
keeshiay
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Apr 14, 2009
9:59 pm
13719
You are clearly a very young beginner in chemistry. SO2 is a compound, the principal product of combustion of sulfur in air. Oxidation states and ionic charges...
John W
johnwwxtraconz
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Apr 15, 2009
4:04 am
13720
thank you. I am taking chemistry over in Ga, but -----Original Message----- Date: Wednesday, April 15, 2009 12:04:25 am To: thechemistrycluster@yahoogroups.com...
Kelly-Rabiahtu Steven...
keeshiay
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Apr 15, 2009
3:40 pm
13722
Dear Members, I have tried to make ammonium salt of sulfamethizole and sulfacetamide, both compounds has the same pKa value (5.4). Unfortunately, it worked for...
Shadeed Gad
sheded2110
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Apr 16, 2009
10:56 am
13723
I am planning to take my post graduate study and I have narrowed down the choice of topics that I am interested to work with. But the problem is, these fields...
Christopher Yec
chris_stop_h...
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Apr 16, 2009
1:54 pm
13724
http://en.wikipedia.org/wiki/Polyurethane john...
zocor@...
zocor...
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Apr 17, 2009
4:17 pm
13725
I am supposed to prepare a lab report and i need information on ''the determination of the total hardness of water by complexometric titration...THANKS...
brainweld
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Apr 17, 2009
7:08 pm
13726
Lab reports are usually preceded by instructions, the student carrying out the instructions, and then writing up the results. . In the fall of 1972 or spring...
BRIAN JENSEN
brianedwardj...
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Apr 17, 2009
7:34 pm
13727
As I remember, I also once did colorimetric titrations for the "hardness" of natural waters, using eriochrome black as the calcium chelating agent. However, as...
John W
johnwwxtraconz
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Apr 18, 2009
1:13 am
13728
Extended draft paper submission: BCBGC-09 call for papers   This Extended Call for Papers is for those who didn't get a chance to submit the papers for the...
John Edward
jeedward
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Apr 18, 2009
4:52 pm
13729
Hi, Since you are determining the total hardness of water, you would want to determine the amount of calcium and magnesium in the water. The best method is to...
Lance Corey
ld_corey
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Apr 18, 2009
5:35 pm
13730
I am reading a book ("Inorganic Chemistry: An Industrial and Environmental Perspective" by T.W. Swaddle) which states that from the point of view of reducing...
cl417
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Apr 18, 2009
8:14 pm
13731
First of all the methane burns to give of only water vapor and CO2. But the gasoline is a big mixture of hydrocarbons , aproximatelymore than 128 individual...
Antonio
galopus
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Apr 18, 2009
9:42 pm
13732
Antonio, Thanks very much for your answer. I think you are correct that gasoline and coal are "dirtier" than methane and that their combustion produces a...
cl417
Offline
Apr 18, 2009
10:35 pm
13733
the burning of the cola gives off also SO2 which creates H2SO4 in the acid reains. Saludos ________________________________ From: cl417...
galopus galopus
galopus
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Apr 19, 2009
2:46 am
13734
hi dear member ,I have tried to identified ethylenglycol can you help me an approuch? [Non-text portions of this message have been removed]...
Amin Kheradmand
kheradmandamin
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Apr 21, 2009
12:05 pm
13735
In the acethylene cyinders there are: 1) diatomaceous earth, why? 2) acetone, why? Thanks....
Antonio
galopus
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Apr 24, 2009
3:09 am
13736
The acetone is added as a stablizer to prevent autopolyemrization of the acetylene.  Without the acetone such a reaction can cause a major reactive chemical...
ag-au
agaubrla
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Apr 25, 2009
9:10 pm
13737
Greetings Breath Analyser working funda : Any Idea? The unit is use of finding amount of alcohol the "driver has consumed " in case he is driving . The unit is...
shailendra Indulkar
indulkarshailu
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Apr 27, 2009
8:09 am
Messages 13706 - 13737 of 13930   Oldest  |  < Older  |  Newer >  |  Newest
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