Chemistry - April 2007

2007-04-07 21:58:21 · 3 answers · asked by King Richard B 1

what alkali does soap contain?

2007-04-07 21:50:29 · 2 answers · asked by bitterhoney 1

The reaction between A and Bin an acidic solution can be written as:
A + 2B + C → D + 4E
A reaction mechanism was postulated as follows:
A + C → F + E(reversible reaction)
F + B → G + E
G + B → D + 2E

Does the mechanism agree with the experimental rate law :
d[A]/dt = -k[A][B][C] ?

Which is the rate determining step ?

2007-04-07 21:47:30 · 1 answers · asked by wong boeing 1

2007-04-07 21:12:29 · 8 answers · asked by Anonymous

other than gun powder, where else can sulfur be found. looking for common use items that contain sulfur in a high level? any and all ideas welcome.

2007-04-07 20:36:04 · 3 answers · asked by klondykekat 1

2007-04-07 20:27:46 · 1 answers · asked by Binatara P 1

2007-04-07 19:13:04 · 2 answers · asked by ptolemyixi 1

The average distance from the Earth to the moon is 384,000km. How many seconds does it take for radio waves that have a frequency of 105 MHz to get from the earth to the moon?

2007-04-07 19:12:44 · 2 answers · asked by Anonymous

2007-04-07 19:11:00 · 1 answers · asked by ptolemyixi 1

2007-04-07 19:02:47 · 1 answers · asked by ptolemyixi 1

In which of the following would silver chloride be most soluble and why?
a)1 M K2CO3
b)1 M HCL
c)1 M AgNO3
d)1 M CaCl2

Doubt you need to know this, but Ksp = 1.7*10^-10.

2007-04-07 17:51:44 · 3 answers · asked by June C 1

If so, why does it work and is there a time frame from moment it appears?

2007-04-07 17:23:27 · 1 answers · asked by King Richard B 1

2007-04-07 17:18:50 · 1 answers · asked by Anonymous

2007-04-07 17:01:20 · 1 answers · asked by star_helen52 1

2007-04-07 16:54:49 · 9 answers · asked by star_helen52 1

An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode.

What is the potential of this cell at 25°C if the copper electrode is placed in a solution in which [Cu2+] = 5.9×10-8 M?

I know that the Cell potential is = Enot-something.....can someone help?

2007-04-07 16:54:03 · 2 answers · asked by Anonymous

fill in the blanks

2007-04-07 16:51:20 · 2 answers · asked by star_helen52 1

I need to know how the chemical theobromine(found in cocoa beans, tea, and cola beverages) acts within the body. Does it release neurotransmitters? if so, which ones. Basically I need to know the chemistry of the reactions it takes part in. And what happens when there is an excess, what interactions with the body results in poinsoning? I could not find much on the internet and the books I have. please list your sources.
Thanks!

2007-04-07 16:47:46 · 2 answers · asked by sunflower 2

fill in the blanks

2007-04-07 16:38:50 · 4 answers · asked by Meno 1

2007-04-07 16:31:10 · 4 answers · asked by protein 1

For a reversible equation can the arrows be like this <-->
or does it always have to be ---> over <--- or vice versa..

2007-04-07 16:24:41 · 5 answers · asked by wzerocx 2

I heard this somewhere but don't remember where, any sources, or why it would be true, if it is.

2007-04-07 16:22:55 · 8 answers · asked by Robert 2

a. CH4
b.CaH2
c. KH
d. NH3

2007-04-07 16:08:42 · 4 answers · asked by Kary_ 1

Cl2 to from antimony trichloride, SbCl3. Why is SbCl5 not as stable as PCl5

2007-04-07 16:07:42 · 1 answers · asked by alanis118 1

1. adding HCl
2. adding NH3
3. adding NH4CL

2007-04-07 15:28:13 · 1 answers · asked by Anonymous

Balance the following equations, using the oxidation number method, and enter the coefficients in the boxes. The coefficients must be the smallest possible integers.

HPbO2- + Re + H2O + OH- Pb + ReO4- + OH- + H2O

Whats the oxidation number method?

2007-04-07 15:27:41 · 1 answers · asked by Anonymous

...the solution one-half way to the equivalence point?

2007-04-07 15:23:11 · 1 answers · asked by Anonymous

I know it is some sort of chemical reaction, but what? And which metal does it?

2007-04-07 15:11:49 · 1 answers · asked by littlblueyes 4

Identify which reagent gets reduced in each of the following redox reactions.


Zn CuCl2 CuCl2 + Zn ZnCl2 + Cu


PtS O2 2PtS + 3O2 2PtO + 2SO2


Cr2O3 Si 3Si + 2Cr2O3 4Cr + 3SiO2


H2 N2 3H2 + N2 2NH3


?I though it was all the elements that are by themselves like Zn for th first one ad PtS for the second one but those answers are not working for me..Hlp please...

2007-04-07 15:10:47 · 1 answers · asked by Anonymous

CH4 + O2 --> CO2 + H2O

2007-04-07 15:04:03 · 1 answers · asked by charobs 1