Chemistry - July 2007

what is the reaction mechanism for the SN1 reaction of 3-bromo-3-methylhexane with methanol?

2007-07-18 05:29:27 · 3 answers · asked by meg 1

how does quinhydrone test determine that the sample i am testing is an amine?

2007-07-18 05:26:03 · 2 answers · asked by bLacksn0w 1

2 NaN3 -> 2Na + 3N2

2007-07-18 05:13:46 · 4 answers · asked by Anonymous

A)CH3COO-

B)H3O+

C)CH3COOH2+

D)CH3CO+

E)NH4+

F)OH-

2007-07-18 05:05:58 · 2 answers · asked by Anonymous

2007-07-18 05:00:34 · 1 answers · asked by JDB828 1

When 0.240 mol of HCOOH is dissolved in 0.916 L of water, proton transfer occurs.
HCOOH + H2O ↔ HCOO- + H3O+
The equilibrium concentration of H3O+ ions is 0.00674 M. Evaluate Keq.

2007-07-18 04:59:19 · 3 answers · asked by Anonymous

2007-07-18 04:51:15 · 6 answers · asked by Ana T 1

2007-07-18 04:48:56 · 3 answers · asked by Anonymous

At elevated temperatures, carbon tetrachloride decomposes to its elements:

CCl4(g) -----> C(s) + 2 Cl2(g)
When a particular experiment was done at 700 K, the equilibrium pressures of carbon tetrachloride and chlorine were found to be 0.65 bar and 0.70 bar, respectively. Suppose this equilibrium system is expanded to twice its initial volume. Find the new equilibrium pressure.

2007-07-18 04:48:19 · 3 answers · asked by Anonymous

Keq for the Haber reaction is 2.81E-5 at 472 C. If a reaction starts with 3.0 bar of H2 and 5.0 bar of N2 at 472C, what is the equilibrium pressure of NH3?

2007-07-18 04:42:29 · 2 answers · asked by Anonymous

Cyanic acid, HCNO, is a weak acid:
HCNO(aq) + H2O(l) -----> H3O+(aq) + CNO-(aq)
In a 0.20 M aqueous solution of HCNO, the concentration of H3O+ is measured to be 6.5E-3 M. Evaluate Keq.

2007-07-18 04:40:23 · 2 answers · asked by Anonymous

NaCl remaining has a mass of 0.724g. What was the mass % of NaCl in the solution?

2007-07-18 04:35:44 · 4 answers · asked by Anonymous

2007-07-18 04:32:06 · 3 answers · asked by Anonymous

Member since: May 28, 2007
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Ali Asharaf Khan
S Dye-penetrant testing, detecting cracks in metals, non-destructive test material/DP test?
I would request to be known what is non-destructive test material, it is also called DP test. Is Dye penetrant testing the non destructive test material and why is it called non destructive test material? Are there any alternatives to the dye penetrant testing? What is the advantages of dye penetrant testing over other testing for detecting cracks in metals? Is the production of dye penetrant material a profitable business. Kindly also let me know how many kinds of these dye testing material are there? Kindly aslo guide me through the phases of dyes testing. Kindly guide me as I want to puchase a plant producing this dye penetrant testing material. Thanks.

2007-07-18 04:21:56 · 4 answers · asked by Alloy 1

2007-07-18 04:21:41 · 1 answers · asked by Anonymous

The addictive painkiller morphine, C17H19NO3, is the principal molecule in the milky jiuce that exudes from unripe poppy seed capsules. Calculate the pH of a 0.0291 M solution of morphine, given that Kb = 7.9E-7.

2007-07-18 04:05:56 · 2 answers · asked by Anonymous

2007-07-18 03:41:21 · 6 answers · asked by ??unknown?? 1

My grandmother mixed Ammonia with Bleach one day and it literally created a miniature explosion.

Obviously this occured due to acid-base neutralization, but would it also occur if Orange juice was substituted for the Ammonia?

2007-07-18 02:50:36 · 2 answers · asked by βread⊆ℜumbs™ 5

what gas is produced when a mosquito coil is lighted?
is it carbon dioxide?

2007-07-18 02:47:22 · 2 answers · asked by christine 2

I need to know how to obtain hydrogen as a pure element instead of a by-product from a reaction. Thanks a lot!

2007-07-18 02:25:59 · 4 answers · asked by Ender 1

U-235 undergoes fission with slow neutrons,these join the nucleus of U-238 to form neptunium,which in turn decays by beta emission to form uranium.But I want to know if neptunium is found as a stand alone element in nature.

2007-07-18 02:23:07 · 3 answers · asked by just thinking 6

reaction what will be the effect of increasing its concentration?

the reaction rate will always decrease
the reaction rate will usually decrease
the reaction rate will always increase
the reaction rate will usually increase

2007-07-18 01:22:37 · 2 answers · asked by notachemwiz 1

I'm looking for its composition, the compounds present in mosquito repellents specially the inorganic ones.

2007-07-18 00:53:12 · 1 answers · asked by Abbey M 2

The fermentation of glucose to produce ethyl alcohol may be represented by the equation:
C6H12O6 ——> C2H5OH + CO2 (Must be balanced)
Determine the grams of glucose (C6H12O6) required to produce 500 mL of 2.5M ethyl alcohol (C2H5OH).

2007-07-18 00:11:35 · 1 answers · asked by Anonymous

explain atomic weight & atomic number

2007-07-17 23:13:03 · 17 answers · asked by Anonymous

usually solids have a greater density than liquids. i actually have an idea but im not really sure that itll work. does anybody have a good and a clear explaination for it?
thank you

2007-07-17 22:45:19 · 5 answers · asked by . : [ s a k u r a ] : . 3

NaHCO3 is Sodium bicarbonate.

2007-07-17 20:51:04 · 2 answers · asked by John Michael C 1

2007-07-17 20:47:37 · 4 answers · asked by Simona Sekulova 1

2007-07-17 20:45:56 · 2 answers · asked by John Michael C 1

Most salts are called sodium chloride, but there are other salts such as sodium nitrate, copper sulphate, but why are sulphate and nitrates and chlorides called salts?

2007-07-17 20:45:09 · 2 answers · asked by Anonymous