Chemistry - November 2006

Is it because oxygen is a diatomic molecule? If so, nitrogen is also diatomic, so why isn't it 1.5 atoms of Nitrogen?

Then it says one mole of C7H5N3O6 has 3 atoms of Nitrogen and 6 atoms of Oxygen. So when considering a mole of something, u count the atoms differently than if they are considered a molecule?

2006-11-15 04:32:51 · 5 answers · asked by bebeeangeldust 4

2006-11-15 04:32:29 · 5 answers · asked by asianchoc 1

40 ml 3% H2O2 = 3.0% H2O2
20 ml 3% H2O2 + 20 ml distilled water = 1.5% H2O2
10 ml 3% H2O2 + 30 ml distilled water = 0.75% H2O2
5 ml 3% H2O2 + 35 ml distilled water = 0.38% H2O2
40 ml distilled water = 0.0% H2O2


someone tell me how did they come up with 1.5%, 0.75% and 0.38%...i mean how to calculate this?thanks.

2006-11-15 04:26:46 · 3 answers · asked by KC 1

What is the structural formula for acetic acid? I'm having difficulty putting this into Lewis Dot Structure.

2006-11-15 04:08:50 · 2 answers · asked by ☺ . CIEL . ☺ 5

2006-11-15 04:00:12 · 5 answers · asked by tarek z 1

2006-11-15 03:57:57 · 2 answers · asked by Derrius S 1

I've already got the idea on this experiment but I wanted to have a certain unique information about it.. I wanted to impress my professor in my first formal report in Organic Chemistry.. Well, our experiments are basic because we are not Chemistry majors..

Thanks!

2006-11-15 03:57:24 · 1 answers · asked by Genro 2

2006-11-15 03:39:33 · 5 answers · asked by Xa!ny 2

I am 11th student.I have a doubt about the experiment which show osmosis in plants. I read that mouth of an inverted thistle funnel is covered with a semi permiable membrane and the funnel is then filled with concentrated solution and dipped in a beaker containing pure solvent. As by the principle osmosis the pure solvent will enter into the funnel through semi permiable membrane and the level of solution inside funnel rises up.This what the experiment shows but I doubts that IT IS DUE TO THE ATMOSPHERIC PRESSURE acting on the surface of pure solvent, b'coz when we dip a straw in water the level of water rises inside the straw. By the same way why should the same thing to be happend here??


please reply me immediatly to get rid of this doubt

2006-11-15 03:31:10 · 1 answers · asked by anu 1

(not sulfide, sulphite or sulphate ions)

2006-11-15 03:06:23 · 3 answers · asked by chem-is-try 1

when you burn hydrogen, is anything given off. or does it just burn. because the law of conservation of mass says something has to take its place

2006-11-15 02:51:05 · 12 answers · asked by Unexistingpromise 2

2006-11-15 02:45:11 · 2 answers · asked by G 1

i need to know this fr a project so plz tell me if u know ne such liquid

2006-11-15 02:33:12 · 2 answers · asked by Anonymous

hey ppl i want to know the boilin pt of benzene as soon as possible plz help me...........

2006-11-15 02:23:47 · 4 answers · asked by Anonymous

2006-11-15 02:11:25 · 4 answers · asked by colt 1

I have a Chemicals Research application that involves use of high purity Triacetin. I intend to use Gas Chromatography technique to determine purity. Help on GC Column type and conditions would be appreciated. It is needed soon....It is top priority.

2006-11-15 02:10:21 · 2 answers · asked by Amit M 1

i live in iran and it is really cold here it is snowing now and the weather is too cold.

2006-11-15 02:04:15 · 15 answers · asked by star 1

2006-11-15 01:59:22 · 3 answers · asked by acoreys 1

2006-11-15 01:42:10 · 6 answers · asked by ugk 1

2006-11-15 01:42:02 · 2 answers · asked by sunitha a 1

2006-11-15 01:23:54 · 2 answers · asked by anast_ycrh 2

2006-11-15 01:09:43 · 3 answers · asked by fatimah w 1

Hello,

after I asked the question does liquid hydrogen flow uphill, my friend Chris Mitchell told me it was really liquid HELIUM that flows uphill.

Is this really true? or is he talking a load of **** again?

I also found this here:

http://www.sciencewatch.com/may-june2002/sw_may-june2002_page7.htm

2006-11-15 00:46:03 · 3 answers · asked by Wedge 4

2006-11-15 00:44:10 · 4 answers · asked by bihariraja 3

2006-11-15 00:40:32 · 3 answers · asked by emo u 1

2006-11-14 23:55:40 · 1 answers · asked by mafie 1

is it harmful for humans to burn charcoal in an enclosed room?

2006-11-14 23:11:53 · 3 answers · asked by Pied Piper 2

2006-11-14 23:00:06 · 5 answers · asked by Ritesh K 1

2006-11-14 22:52:19 · 10 answers · asked by Anonymous

Can I add this up please?? Thanks!! What is the equations involved in the silver nitrate (AgNO3) test? Thanks a LoT!!! :)

2006-11-14 22:33:00 · 3 answers · asked by MiG 1