Chemistry - July 2007

I can't figure out what the otherside of the chemical equation would be

2007-07-05 17:59:04 · 3 answers · asked by mrsjoshgroban 1

Calculate the normality of a diluted solution of HCl if its 20ml of normality 10N is mixed with distilled water to make 1dm^3 soln.


Please involve all the steps and 'explain' me what exactly the problem is and how to go about ..


Thank you tonn in advance !!

2007-07-05 17:49:04 · 5 answers · asked by > FREAK < 1

IE: He is under 8A which has 8 valence electrons. Then the atomic number is 2 which equall 2 electrons as well. Someone please help! Thank You All!

2007-07-05 17:38:39 · 12 answers · asked by Anonymous

Hydrogen becomes a liquid at just below absolute zero. Oxygen is a liquid at almost -300 F. So how is it that water (H2O) is a liquid at room temperature?

2007-07-05 17:26:56 · 5 answers · asked by Richard_CA 4

A 2.5 mole NOCL in 1.5 L in a 400 degrees Celcius solution. After it reaches equilibrium, 28% of NOCl was dissacciated.

2NOCL(g)---->2NO(g)+Cl2(g) (Reversible Reaction)

Calculate Kc.

I am stumped. Anyone have an idea?

2007-07-05 17:11:58 · 2 answers · asked by wally a 1

im still confused of this. i understand isotopes but i do not why isotopes exist?
help me pls.....

2007-07-05 16:34:31 · 2 answers · asked by san 2

2007-07-05 16:01:32 · 3 answers · asked by Mr. Ask? 1

2007-07-05 15:46:53 · 1 answers · asked by james m 2

How many Kg would be required to make up 200 mL of a 0.0025 M solution of ammonium oxalate monohydrate [ (NH4)2 C2O4 H20]...what is the process and answer? I don't know how to go about this.

2007-07-05 15:18:43 · 5 answers · asked by mdet06 2

2007-07-05 14:22:06 · 3 answers · asked by Anonymous

2007-07-05 14:20:57 · 5 answers · asked by Anonymous

2007-07-05 14:19:53 · 2 answers · asked by Anonymous

2007-07-05 14:18:50 · 2 answers · asked by Anonymous

a. H2SO4 b. NA2SO4 c. NaHS d.H2S e. HNO3

2007-07-05 14:07:50 · 6 answers · asked by staylor8319 1

I have an excess of citric acid and I want to neutralize some smell from some farm animal litter I'm dealing with.

2007-07-05 12:17:04 · 5 answers · asked by Thomas 2

On a cold day, a person takes in a breath of 450 mL of air at 86.6 kPa and –10°C. What is the volume of this air in the lungs at 37°C and 650 mm Hg?

2007-07-05 10:49:47 · 2 answers · asked by Anonymous

a. one b. two c. three d. four e. five

2007-07-05 10:46:40 · 6 answers · asked by Anonymous

a. NH3, strong acid b. NaOH, weak base c. dilute HCl, weak acid d. CH3COOH, strong acid e. they are all incorrectly identified

2007-07-05 10:45:21 · 5 answers · asked by Anonymous

With pressure constant, the temperature of a gas is increased from 30° C to 90°C. The volume will

a)triple
b)decrease by ½
c)increase by about 20%
d)remain the same

2007-07-05 10:44:22 · 6 answers · asked by Anonymous

If some helium gas at 900 torr and 25°C is allowed to expand from 2.6 L to 5.8 L without changing the temperature, what pressure will the helium gas exert?

2007-07-05 10:43:24 · 2 answers · asked by Anonymous

a. 2.5 M b. 1.0 M c. 5.0 M d. 10 M e. 2.0 M

2007-07-05 10:42:44 · 2 answers · asked by Anonymous

a. acidic b. basic c. neutral d. saturate e. none of these

2007-07-05 10:32:47 · 11 answers · asked by Anonymous

2007-07-05 09:58:25 · 4 answers · asked by Anonymous

My chiropractor is very attuned to both his and others characteristics as they relate to the elements of wood, earth, fire, metal and water. These are concepts that I've linked with Feng Sui color co-ordination in the past. Never heard of them when it comes to describing personal characteristics/pesonality traits. Can someone explain please?

2007-07-05 08:44:42 · 4 answers · asked by Anonymous

what is the concentration of sugar(C12H22O11) in mol L^-1 if its 20g are dissolved in enough water to make a final volume up to 2L

2007-07-05 08:43:44 · 2 answers · asked by harry 1

2007-07-05 08:43:23 · 11 answers · asked by Anonymous

Which of the following slightly soluble substances are more soluble in acidic solution: AgCl , AgCN , CaF2 ? Can you please explain why? Thank you very much

2007-07-05 08:13:41 · 2 answers · asked by Rnx 2

Thank you for your help =)

2007-07-05 08:01:03 · 3 answers · asked by Rnx 2

9. In the compound, CaNa[Fe(CN)6], what ligands are in the coordination sphere?
A. Ca2+
B. Na+
C. CN-
D. H2O
E. none of these
10. What are the respective central-metal oxidation state, coordination number, and overall charge on the complex ion in
Na2[Cr(NH3)2(NCS)4]?
A. +3; 6; -1
B. +3; 6; +1
C. +2; 6; -2
D. +2; 4; -1
E. +1; 6; -2
11. In the following reaction, Ni2+ is acting as a(n) __________.
Ni2+ (g) + 6H2O (l) → Ni(H2O)62+ (aq)
A. oxidizing agent
B. Lewis acid
C. precipitating agent
D. solvent
E. ligand
12. Which one of the following species is paramagnetic?
A. Cu+
B. Cr3+
C. Zn
D. Ca
E. Ag+
13. How many d electrons are in the cobalt ion of K3[Co(CN)6]?
A. 3
B. 5
C. 6
D. 7
E. 4
14. What is the charge on the complex ion in Mg2[FeCl6]?
A. 2-
B. 2+
C. 3-
D. 3+
E. 4-
15. What is the oxidation number of chromium in [Cr(NH3)4Cl2]Cl?
A. -3
B. +3
C. +2
D. -2
E. 0

2007-07-05 07:59:43 · 2 answers · asked by lilmace24 1

I am looking for an article in the Feb. 12, 1975, Vol. 104(2) issue of the Journal of Chromatography. Is there any way to access this online?

2007-07-05 07:04:35 · 3 answers · asked by John Timothy 5