Chemistry - May 2007

2007-05-06 07:32:13 · 1 answers · asked by ae_lover2512 1

1. The equilibrium is shifted to the right
2. The equilibrium remains unchanged.
3. The equilibrium is shifted to the left

2007-05-06 07:31:22 · 3 answers · asked by Anonymous

Hi, I'm a bit stuck on when something is sulphate and and when something is sulphide.
I know you would say copper sulphate as a reaction with sulphuric acid, but I'm stuck as to why.
Thanks.

2007-05-06 07:28:51 · 3 answers · asked by Anonymous

2007-05-06 07:27:43 · 5 answers · asked by Puntu Babu 1

This is a complex Ion and didn't know how to do subscript (en) is an ethylenediamine molecule H2N-(CH2)-NH2. Also do you know how to get the Oxidation Number? Some of the elements have more than one listed. Thanks, I am just not getting this yet.

2007-05-06 07:11:03 · 2 answers · asked by krazy 2

OH-
(SO4)2-
(O)2-
NH4+
(CO3)2-

2007-05-06 05:10:09 · 1 answers · asked by Helpmeplease 1

a.at equlibrium
b.buffered
c.complete
d.reversible

2007-05-06 04:31:51 · 5 answers · asked by Josephine 1

If elements with principal quantum no n>4 were not allowed in nature,the no of possible elements would be:-
1)60
2)32
3)4
4)64

2007-05-06 04:21:47 · 1 answers · asked by Hardcore 1

2007-05-06 04:04:40 · 1 answers · asked by marijo 1

2007-05-06 02:47:16 · 1 answers · asked by . 1

2007-05-06 02:09:58 · 4 answers · asked by J. 1

2007-05-05 23:48:17 · 2 answers · asked by Anonymous

2007-05-05 22:14:25 · 12 answers · asked by Anonymous

2007-05-05 22:08:43 · 3 answers · asked by Anonymous

0.600g of monoprotic acid is dissolved in 50.00ml water. Titration of this acid sample requires 24.9 ml of 0.100M sodium hydroxide. Calculate the molecular weight of the monoprotic acid.

2007-05-05 22:01:49 · 2 answers · asked by hazardous_century 1

2007-05-05 21:59:59 · 9 answers · asked by Anonymous

2007-05-05 21:35:30 · 3 answers · asked by Anthony L 1

2007-05-05 21:33:35 · 5 answers · asked by Anthony L 1

Question 2: Why would it be dangerous to use a water extinguisher to put out fire in a factory that uses large quantities of magnesium or aluminium?

2007-05-05 20:49:47 · 6 answers · asked by Anonymous

The compound SF2 readily react with fluorine to give SF4.Suggest why MgF2 does not react with more fluorine to give MgF4.

2007-05-05 20:45:44 · 1 answers · asked by Anonymous

2007-05-05 19:23:00 · 5 answers · asked by Anonymous

2007-05-05 18:20:46 · 3 answers · asked by damron 3

2007-05-05 16:50:57 · 3 answers · asked by waterbabe613 1

Which category is composed of elements that have both positive and negative oxidation states?
(1) the alkali metals
(2) the transition metals
(3) the halogens
(4) the alkaline earth metals

When ethylene glycol (an antifreeze) is added to water, the boiling point of the water:
(1) decreases, and the freezing point decreases
(2) decreases, and the freezing point increases
(3) increases, and the freezing point decreases
(4) increases, and the freezing point increases

In a fusion reaction, a major problem related to causing the nuclei to fuse into a single nucleus is the:
(1) small mass of the nuclei
(2) large mass of the nuclei
(3) attractions of the nuclei
(4) repulsions of the nuclei

2007-05-05 15:28:58 · 3 answers · asked by Anonymous

2 KClO3 -> 2 KCl + 3 O2
H2 + Cl2 -> 2 HCl
Zn + CuSO4 -> ZnSO4 + Cu
NH3 + HCl -> NH4+ + Cl-
C + O2 -> CO2
H2SO4 + 2 KOH -> K2SO4 + 2 H2O
2 H2O -> 2 H2 + O2
2 Na + Cl2 -> 2 NaCl
NaCl + AgNO3 -> AgCl + NaNO3

2007-05-05 15:19:04 · 2 answers · asked by soccrrulz21 2

Could solutions of pH > 7 be prepared be contined dultuion fo 0.10M HCl solution at 25 degrees C?
Explain.

Ie, can a acidic solution be converted to basic solution by dilution? I dont think so, but maybe there is more to it?

2007-05-05 15:14:30 · 2 answers · asked by Siddy 1

2007-05-05 15:10:32 · 4 answers · asked by Anonymous

2007-05-05 15:06:08 · 9 answers · asked by Selena 1

Has to do with chemistry.... If it helps...

2007-05-05 14:43:23 · 2 answers · asked by gabigab_13 1

What r galvanic or Daniel cells? What is the principle of energy conversion? Give a diagram.

2007-05-05 14:28:30 · 2 answers · asked by loally 2