Chemistry - May 2007

Fe + F2 -> FeF3

Fe + Sn(No3)4 -> Fe(NO3)3 + Sn

2007-05-16 10:40:39 · 4 answers · asked by Andy D 3

2007-05-16 10:37:38 · 1 answers · asked by erikck 2

Which of the following will undergo Friedel-Crafts alkylation with (CH3)3CCl, AlCl3 most rapdily?

A. acetophenone
B. toluene
C. cyanobenzene
D. benzenesulfonic acid
E. iodobenzene

2007-05-16 10:37:25 · 3 answers · asked by jeanettervetr 2

2007-05-16 10:35:20 · 3 answers · asked by W 1

I am doing a lab in school where the teacher gives us a pile of who knows what and we have to identify each substance in it. I was wondering if i take some liquid from the "sludge" will it contain all liquids, or will other liquids with a greater mass be sitting on the bottom?

2007-05-16 10:09:31 · 8 answers · asked by bngoalie 1

A protein must be synthesized by a cell. Part of the amino acid sequence in this protein is:

-Ala-Gly-Thr-Leu-

The codons for these amino acids are:

Gly- GGC
Leu-CUA
Thr-UAU
Ala-GCA

Write the base sequence for the complete chain as given and the complimentary bases as would be found in the DNA from which it was taken.

2007-05-16 09:58:27 · 2 answers · asked by Missy H 1

i just need a few major differences...other than GC does not require the substance to react to UV light.

ty a lot!!!

2007-05-16 09:53:30 · 2 answers · asked by Anonymous

Silver iodide powder is added to a solution containing 39.8 L of dissolved hydrogen gas at that were dissolved in the water at SATP. What mass of silver iodide powder would react completely with the gas?

H2+2AgI--> 2HI+ 2Ag

Is this the correct molecular formula?

p.s this is for redox Stoichiometry

2007-05-16 09:37:07 · 2 answers · asked by Anonymous

hey can anyone give me any names of alkalis? quite strong ones i need.......

Arrange these in order (the most reactive first):
copper, zinc, calcium or iron???

2007-05-16 07:21:12 · 6 answers · asked by DK :) 2

SO2
ClO2-1

i thought they were all linear but i got it wrong.

2007-05-16 07:21:03 · 2 answers · asked by molly 1

2007-05-16 07:11:03 · 5 answers · asked by Yuuki Kuran 1

Soaking poultry and pork chops in brine makes them juicier and more succulent. But how? I thought that if you put a piece of meat in a saltier environment than the tissue itself, it would LOSE moisture -- right? How does brining make poultry and pork so moist?

2007-05-16 07:08:30 · 4 answers · asked by Rеdisca 5

2007-05-16 07:05:07 · 3 answers · asked by amateurgrower 3

So my teacher has given us a piece of white-chalk-like substance, and we need to tell him what it is. We have measured the density, acidity, etc. How can I tell how many moles of stuff are present in it and ultimately what it is? What are some tables that I can use to determine its composition?

2007-05-16 06:54:37 · 3 answers · asked by Anonymous

2007-05-16 06:45:36 · 4 answers · asked by Anonymous

pls help

2007-05-16 06:39:08 · 2 answers · asked by Nijin K 2

2007-05-16 06:18:18 · 4 answers · asked by Troy S 1

Science-based

2007-05-16 06:18:14 · 2 answers · asked by Anonymous

Thanks for your help.

2007-05-16 06:06:08 · 1 answers · asked by wsdmskr825 2

write this numbe rin scientific notation with 4 significant digits
13324.560741

write this number in scientific notation with 2 significant digits
0.00000000486

what does significant digits mean?
how do you find them?

2007-05-16 05:58:59 · 6 answers · asked by cj872006 5

has an H+ concentration of 1.0 x 10 to the -4, what is the pH?

2.)what is the hydrogen ion concentration of stomach acid? (pH=2)

3.)A birthday balloon is blown up with dry air to a volume of 8.4 cm3. what volume is oxygen?

4.)convert 36 L of N2 into grams.

5.)Aerobic respiration, or the process by which animals use energy by breaking down glucose in the presants of oxygen, is described by the equation C6 H12 O6 + O2-->CO2 + H2O.

A.) balance the equation

B.) calculate how much carbon dioxide is exhaled if an animal inhales 32.0 g O2.

6.)1.5 kg of fuel is burned on a natural gas grill during a BB-Q. how much heat is released in Kcal?

7.)if you use a liter (1000ml) bottle of oil in your engine, how much heat is produced in Kcal? in BTU? to solve this problem you must know the density of motor oil is .82g/ml

2007-05-16 05:44:41 · 2 answers · asked by hotty_gurl8900 3

2007-05-16 05:02:36 · 5 answers · asked by Anonymous

2007-05-16 04:24:17 · 6 answers · asked by telaviv2708 1

2007-05-16 04:17:55 · 2 answers · asked by obaidul h 1

5. A sample of gas occupies 1.55 L at 27oC and 1.00 atm pressure. What will the volume be if the pressure is increased to 50.0 atm, but the temperature is kept constant?


6. A sample of nitrogen gas occupies 1.55 L at 27oC and 1 atm pressure. What will the volume be at -100oC and the same pressure?


7. A 1.0 L volume of gas at 27oC exerts a pressure of 85.5 kPa. What will the pressure be at 127oC? Assume constant volume.


8. A sample of nitrogen has a volume of 275 mL at 273K. The sample is heated and the volume becomes 325 mL. What is the new temperature in kelvins?


9. A small cylinder of oxygen contains 300.0 mL of gas at 15 atm. What will the volume of this gas be when released into the atmosphere at 0.900 atm?

2007-05-16 04:17:30 · 2 answers · asked by dababyboo4lyfe 2

I want the valence bond theory and drawbacks of crystal field theory if anybody has the answer plz write it down else state the name of the sites where i can get these answer.

Thanks!!!!

2007-05-16 04:16:41 · 3 answers · asked by Street Guyz 1

How do you balance the equation AL + NO3(-) --> AL(OH)4(-) + NH3 using the change in oxidation number method? I got stuck on identifying the oxidation numbers, I couldn't remember how to....any help?

2007-05-16 04:09:54 · 3 answers · asked by racingfreak66 1

2007-05-16 02:51:45 · 1 answers · asked by Anonymous

When you boil water, the water loses oxygen. Does this affect the chemical makeup of the water?

Or, is the oxygen that is expelled through boiling simply oxygen dissolved in the water

Jamie

2007-05-16 02:12:15 · 5 answers · asked by Anonymous

2007-05-16 01:55:26 · 8 answers · asked by Anonymous