Chemistry - October 2006

2006-10-31 02:11:31 · 1 answers · asked by vaz753 1

2006-10-31 02:11:23 · 9 answers · asked by SHIKHA G 1

2006-10-31 02:08:56 · 5 answers · asked by jones b 1

would you puke blood

2006-10-31 02:07:31 · 4 answers · asked by Dylan C 1

2006-10-31 02:02:59 · 1 answers · asked by ghettoco 1

2006-10-31 02:02:58 · 9 answers · asked by vaz753 1

find information on pentadiol?

2006-10-31 02:01:28 · 3 answers · asked by kiki_t 4

2006-10-31 01:16:17 · 7 answers · asked by Kate M 1

Hi, first of all, let me stress that this answer is needed for a novel
I am writing and will not be put to practical use ! :-) The
protagonist needs to dissolve his victim as soon as possible (bones
can be left intact, but the flesh must be removed) before the cops
locate the body. The plot dictates that this should be done within a
week if at all possible. I was toying with lime and HCL, but then
remembered that one will neutralize the other! Can you please help?
Many thanks!

2006-10-31 01:15:15 · 5 answers · asked by lord_art9 1

1mole of N2 is mixed with 3moles of H2 in a 4liter if 0.0025 mole of n2 is converted to NH3 by reaction N2+3H2 REVERSIBLE 2 NH3 CALCULATE THE equiliberium constant(K) in consentration units. What will be value of K for equiliberium 1/2N2+3H2 REVERSIBLE NH3

2006-10-31 00:34:42 · 3 answers · asked by kedbadawe 1

1mole of N2 is mixed with 3moles of H2 in a 4liter if 0.0025 mole of n2 is converted to NH3 by reaction N2+3H2 REVERSIBLE 2 NH3 CALCULATE THE equiliberium constant(K) in consentration units. What will be value of K for equiliberium 1/2N2+3H2 REVERSIBLE NH3

2006-10-31 00:32:17 · 2 answers · asked by kedbadawe 1

1mole of N2 is mixed with 3moles of H2 in a 4liter if 0.0025 mole of n2 is converted to NH3 by reaction N2+3H2 REVERSIBLE 2 NH3 CALCULATE THE equiliberium constant(K) in consentration units. What will be value of K for equiliberium 1/2N2+3H2 REVERSIBLE NH3

2006-10-31 00:29:58 · 2 answers · asked by kedbadawe 1

what is phosphate!!!!????????does it have to do with soap???

2006-10-31 00:20:13 · 3 answers · asked by Anonymous

procedure, properties,uses&images of potassium trioxalatochromate

2006-10-30 23:27:53 · 2 answers · asked by tisha_sethi 1

My younger sister has asked for help with some chemistry homework she has been set and unfortunately I know nothing useful about The Mole. I have balanced the equations for her but that's as far as I can go without becoming totally flustered. Could someone either give a detailed method in basic basic basic terms lol on how to work out the following ... or if you're feeling ultra nice, the answers with workings out :) I shall be forever in your debt if you do.
So here goes:

1: What mass of CO2 is produced by the complete combustion of 12g of C?

2: Calculate the mass of S that must be burned to produce 64g of SO2.

3: When CaCO3 is heated it produces CaO and CO2. What mass of CO2 can be produced by heating 10g of CaCO3?

4: Mg reacts with h2SO4 to produce MgSO4 and H2. What mass of H would be produced by reacting 12g of Mg with excess H2SO4?

5: Calculate mass of C needed to reduce 15.9g of copper(II) oxide:
CuO(S) + C(s) --> Cu(s) + CO(g)

Any help greatly appreciated.

2006-10-30 23:17:43 · 6 answers · asked by yummygummybear2006 1

2006-10-30 22:57:45 · 13 answers · asked by Rob 1

A.CaCl2
B.MgO
C.Al2O3
D.Cs2S
E.PCl3

2006-10-30 22:54:48 · 3 answers · asked by ally 2

20.00cm^3 of KI solution of unknown concentration is titrated with 0.0250M KMnO4 solution in the presence of excess acid. 14.80cm^3 of the KMnO4 solution is required for complete reaction. Calculate the concentration of the KI solution.
----

My workings out so far:
n = cV

first part:
n(KMnO4) = 0.0250 x 14.80 = 0.37
c(KI) = 0.37/20 = 0.0185

The answer has to be 0.0925M
If you divide 0.37 by 4 then the answer comes out, but I'm not sure how to do it. I'd really appreciate some help!!!

2006-10-30 22:16:57 · 1 answers · asked by Dark42 2

the equation for the reaction between elemental magnesium and a solution of gold (III) chloride is

Mg + AuCl3 --> MgCl2 + Au

If a piece of magnesium weighing 1.00 g is placed in a solution that contains 3.00 g of gold (III) chloride dissolved in water, which of the reactants is present in excess? What weight of gold is formed ? how much of the excess reactant is left when the reaction is over?

2006-10-30 22:07:52 · 2 answers · asked by Anonymous

Write the balanced equation for hydrogen peroxide H202, decomposing to form water and oxygen.

a.what is the ratio of moles of hydrogen peroxide decomposed to moles of water produced?
b.What is the ratio of moles of hydrogen peroxide decomposed to moles of oxygen produced?
c.How many moles of hydrogen peroxide is needed to produce 3.5 x 10 to the power of 3 moles of oxygen?

2006-10-30 21:50:24 · 3 answers · asked by Anonymous

2006-10-30 21:32:48 · 3 answers · asked by Anonymous

Full details on the importance opf group 2 elements and compounds

2006-10-30 20:37:08 · 6 answers · asked by bestman agu 1

Potassium(K) + Iodine(I) = PotassiumIodide(KI)
BUT I am asked to explain and illustrate using a diagram.
Normally, when i use the method that i understand(valency), i get KзI instead of KI. I need explanation. Help!!

2006-10-30 20:17:08 · 6 answers · asked by xx 3

Okay,
I need the shapes of the followind molecules

Oxygen
Hydrogen
Nitrogen
Water
Methaine
Carbondioxide
Ammonia

2006-10-30 20:06:51 · 3 answers · asked by xx 3

2006-10-30 20:04:56 · 13 answers · asked by eagle4536 1

The electron configuration that forms a colorless cation is _____.
A) 3d6
B) 3d8
C) 3d9
D) 3d10

2006-10-30 18:54:22 · 1 answers · asked by axcryingxshame 1

When a mineral was heated strongly to constant mass, a colourless gas that formed a white precipitate with limewater was evolved. The remaining solid was cooled and added to dilute hydrchloric acid. Vigorous efferverscence was seen. What was the mineral?

A. aragonite, CaCO3
B. artinite, MgCO3.Mg(OH)2.3H2O
C.dolomite, MgCO3.CaCO3
D.gaylussite, Na2CO3.CaCO3.5H2O

the formulas way confusing so I have no idea how to start with this question!

2006-10-30 18:36:17 · 4 answers · asked by Anonymous

2006-10-30 18:33:19 · 12 answers · asked by will t 2

2006-10-30 17:43:58 · 2 answers · asked by Nestorio G 1

2006-10-30 16:59:27 · 2 answers · asked by Michael W 1