Chemistry - July 2007

plss list all the properties first,,then can describe down the group and across the period for each,,
in order to avoid any confusion,,
and also plss state if there r any exceptions plss,,


thanx,,

2007-07-11 03:54:57 · 3 answers · asked by gunkedar 2

ethylcyclopropane

2007-07-11 03:51:23 · 3 answers · asked by Anonymous

Do you reckon my old old school rugby top could work as a decent filter to get an acetomophen (spelling?) precipitate out of an aqueous solution (not saying what :) )

2007-07-11 03:44:43 · 3 answers · asked by malaysniper 2

2007-07-11 03:37:23 · 2 answers · asked by pidugu k 2

Hmmm... Go for it!

2007-07-11 03:27:02 · 4 answers · asked by blueroro93 2

wat is the Net Ionic Equation for the reaction that occurs when small amounts of hydrochloric acid are added to HOCL/NaOCl buffer solution?
a. H + H20-> H3O
b. H + OCl-> HOCL
c. HOCl-> H + OCl
d. H + HOCl-> H2OCl
e. HCl + HOCl -> H2O + Cl2

i have no clue how to figure out this one!! thanxx

2007-07-11 02:53:15 · 1 answers · asked by nismo man 1

Fats and oils are commonly made up of triglycerides. When subjected to frying (i.e. at approx 200 degrees celsius), these triglycerides tend to polymerize. Suggest the mechanisms in which they could polymerize.

I would appreciate it if you can cite some journal articles to back your view. :)

Thanks.

2007-07-11 01:21:47 · 5 answers · asked by keld_is_on 1

2007-07-10 22:58:06 · 4 answers · asked by sci_voir 1

My friend broke a 60ml syringe in chemistry class and I gotta replace it (at least the top bit, but I dont know where to go. It says B-D
N-154
on it if that means anything.
Doesn't need a needle.

2007-07-10 19:06:02 · 3 answers · asked by Anonymous

how is that?

2007-07-10 18:48:03 · 3 answers · asked by simdawgydawg 2

the hydrate is used as is. no heating is inovolved.

2007-07-10 18:10:13 · 1 answers · asked by amino 4

Al2(CO3)3
(Fe)3(AsO4)2
Ni3(PO4)2

2007-07-10 17:52:58 · 2 answers · asked by claudia_natacha 1

I see slugs a lot and i always pour salt on them, but why does kill them? And where does the slime come from?

2007-07-10 15:41:40 · 6 answers · asked by levi rulZ 2

I'm looking through my textbook and I can only find the formulas for for the two, no characteristics. Thanks alot.

2007-07-10 15:41:03 · 8 answers · asked by Devin G 2

I am trying to figure out if the pH of 0.1 M acetic acid is equal to, greater than, or less than the pH of 0.1 M hydrochloric acid. I don't need someone to do the work for me, maybe just explain how to do it would be great, thanks alot! Devin

2007-07-10 15:30:55 · 6 answers · asked by Devin G 2

2007-07-10 14:57:35 · 5 answers · asked by trini_jeevan0585 1

2007-07-10 14:44:11 · 1 answers · asked by Lucas G 1

what color would this water have produced when treated with the cabbage extract?

2007-07-10 14:35:58 · 3 answers · asked by Anonymous

Hit: A gas could be dissolved in the water that might affect its pH.

2007-07-10 14:30:24 · 3 answers · asked by Anonymous

2007-07-10 14:14:11 · 7 answers · asked by rocky 1

- What are moles????

plz xplain with the help of some example,cz i've read like tonz of definationz about it and still sometimes seem to be confused.

thnx a bajillion!

2007-07-10 13:43:43 · 5 answers · asked by RaZoR 2

2007-07-10 13:30:00 · 5 answers · asked by Jason B 1

2007-07-10 13:28:39 · 4 answers · asked by Jason B 1

h2o2 is a colorless liquid.a concentrated solution of it is used as a source of oxygen for rocket propellent fuels.dilute aqueous solutions are used as bleach.analysis of solution shows that it contains 0.909 mol h2o2 in 1.00l of solution, what is the mass of h2o2 in this volume of solution?

2007-07-10 13:20:04 · 3 answers · asked by Anonymous

when finding oxidation numbers, i know you have to balance the equation. for example

PbO2 , where Pb = x

x + 2(-2) = 0
x + 4 = 0
x = -4

how do i know that this equation is supposed to balance at 0. Some of them i do it is -1, some it is -2? Help pleeease!

2007-07-10 10:47:40 · 4 answers · asked by Anonymous

Chromic acid test would give a "positive" or a "negative" result for:

1)2-Butanol

2) delta-Pinene

3)1-Butanol

4) 2-Methyl-2-propanol

anyone has any idea?thank you

2007-07-10 09:26:51 · 3 answers · asked by ichigokun 1

Would a temperature change affect the refractive index and if so, how?

Select the best explanation from those shown.

1) At higher temperatures, the liquid would evaporate and the refractive index could not be measured accurately.

2) Yes, a decrease in temperature would decrease the refractive index.

3) Yes, a decrease in temperature would increase the refractive index.

4) No, the refractive index is temperature independent.

anyone has any idea?thank you.

2007-07-10 09:21:37 · 4 answers · asked by ichigokun 1

I'm not sure as to why if we know the chemical make up of water, why we can not create an "artificial water"?

2007-07-10 08:54:03 · 11 answers · asked by James S 1

2007-07-10 08:11:15 · 2 answers · asked by cHaKa dOLL 1

2007-07-10 08:03:15 · 2 answers · asked by TOM H 2