Chemistry - July 2007

2007-07-17 05:25:10 · 3 answers · asked by Anonymous

2007-07-17 05:13:50 · 3 answers · asked by Anonymous

2007-07-17 04:54:05 · 5 answers · asked by Anonymous

2007-07-17 04:52:58 · 3 answers · asked by Anonymous

2007-07-17 04:52:27 · 2 answers · asked by Anonymous

2007-07-17 04:51:23 · 2 answers · asked by Anonymous

2007-07-17 04:47:48 · 1 answers · asked by Anonymous

when using tow different types of PH calculator for constructing a table two different results appered. And by using MATLAB for solving the relation between acid conc. and H conc. for diprotic acid gave a new result some of it agrees with practical results and others not agree

2007-07-17 04:47:29 · 2 answers · asked by egawwad 1

Explain in molecular terms why the Haber synthesis:

N2 + 3 H2 2 NH3
cannot proceed in a single-step elementary reaction. Select all that apply.


1)a single-step elementary reaction would require the simultaneous collision of two molecules

2)a single-step elementary reaction would require the breaking of four bonds and the formation of six new bonds

3)a single-step elementary reaction would require the simultaneous collision of four molecules

4)a single-step elementary reaction would require the breaking of five bonds and the formation of six new bonds

2007-07-17 03:26:02 · 1 answers · asked by Anonymous

2007-07-17 02:47:59 · 4 answers · asked by marinecorpsgreg 1

My sister asked me to research about this "golden pathway" in Chemistry. I have no idea what it is and I can't think of anywhere to search anymore.

I guess it has something to do with pathways...in Chem...or something. Please answer.^-^

2007-07-17 02:32:27 · 2 answers · asked by Yuniko 1

Is there any other reason why deodorizers work despite of making the air smell good?

2007-07-17 02:30:40 · 2 answers · asked by LyKa_TaNtaRaNtAn 2

hi,
does anyone know or have any information about where i can get used or reconditioned HPLC and GC equipments, i would be more interested in contacts in europe, US or anywhere where it can be imported into the UK.
thanks

2007-07-17 01:58:05 · 3 answers · asked by dave d 2

removing NH3 and adding H2
removing NH3 and lowering the temperature
removing NH3 and raising the temperature
removing NH3 and decreasing the volume

2007-07-17 01:37:54 · 3 answers · asked by notachemwiz 1

the reaction will shift left to right
the reaction will shift right to left
there will be no further reaction
what happens depends on the temperature

2007-07-17 01:36:57 · 2 answers · asked by notachemwiz 1

Are the following naturally occurring?
a.) antimony - Sb
b.) uranium - U
c.) francium - Fr

I really need your answers..please!

2007-07-17 01:31:03 · 4 answers · asked by so_homeless 1

2007-07-17 01:30:07 · 2 answers · asked by ladyxtasty 1

In the polymerization of epsilon-caprolactone to poly(caprolactone), tin (stannous) octanoate is usually used. Does it have an advantage over polymerization using alkoxides? I searched hard for this, but couldn't really find an answer.

2007-07-17 01:01:14 · 3 answers · asked by Ahmed 2

A student prepared a 0.10 M solution of acetic acid, CH3COOH. Acetic acid has a K4 of 1.75 x 10^-3. What are the hydronium ion concentration and the pH of the solution?

2007-07-17 00:50:29 · 1 answers · asked by Anonymous

Calculate the hydronium ion concentration and the hydroxide ion concentration in blood, the pH of which is 7.3 (Slightly alkaline).?

2007-07-17 00:44:57 · 3 answers · asked by Anonymous

2007-07-17 00:44:01 · 2 answers · asked by vijay .p 1

Lewis dot diagram, molecular shape, bond angles predicted on the central atom .

2007-07-17 00:42:18 · 0 answers · asked by Anonymous

2007-07-17 00:42:09 · 4 answers · asked by vijay .p 1

uses of laboratory apparatus

2007-07-17 00:17:42 · 2 answers · asked by jOt 1

Iron nail + K3Fe(CN)6----->?
Iron nail with Cu + K3Fe(CN)6----->?
Iron nail with Zn + K3Fe(CN)6------>?
Cu + K3Fe(CN)6----->?
Zn +K3Fe(CN)6----->?

2007-07-16 23:51:46 · 1 answers · asked by Mr S 2

what is the cost of producing copper per tonne in australian dollars

2007-07-16 23:00:09 · 2 answers · asked by Anonymous

my lil bro asked me for help on his chem, and well you know chem in highschool was too long ago =p

anyone know the chemical equation for the reaction that occurs when you remove zinc layer from iron with HCL?

thanks in advance

2007-07-16 21:54:21 · 2 answers · asked by DJ-ICE 1

2007-07-16 21:53:47 · 1 answers · asked by pippa 2

2007-07-16 21:29:22 · 1 answers · asked by emikato_913 2

DEHA is used in boiler water condensate treatment as filmimg amine

2007-07-16 21:29:02 · 1 answers · asked by Kishorkumar Parmar 1