Chemistry - October 2006

WHAT IA A SHELL?

2006-10-29 04:09:21 · 6 answers · asked by cutelizzy2006 2

The ionic radius of this element is 1.95 times larger than its atomic radius. Its electormnegativity value is greater than 3.00 Paulings. Its 6th ionization energy is tremendously larger than its 5th ionization energy.

2006-10-29 04:04:55 · 3 answers · asked by Andrew 1

a) How many chiral carbons are there in this carbohydrate?

b) How many optical isomers does this carbohydrate have ?

....CHO
.....I
H-C-OH
.....I
H-C-OH
.....I
H-C-OH
.....I
CH2OH

the periods i wrote are to hold the bonds where they are supposed to be

2006-10-29 03:58:23 · 2 answers · asked by Kay Kay 1

What two elements are the most dense?

2006-10-29 03:55:38 · 6 answers · asked by Anonymous

The density of a substance changes as pressure or temperature changes. Explain. Is it the mass or the volume (or both) that is changing?

2006-10-29 03:50:54 · 6 answers · asked by Anonymous

a) HNO3(aq) + Al^3CO3^2−(aq)-------> how do you balance this one?
what is the word equation?
general word equation? nitric acid + alminum carbonate
Im I right?

2006-10-29 03:44:30 · 3 answers · asked by ghettoco 1

2006-10-29 03:23:30 · 2 answers · asked by Ben Y 1

what is the pH value of blood? and what is blood made of?

2006-10-29 03:18:36 · 12 answers · asked by Hooz 2

thx

2006-10-29 03:01:28 · 11 answers · asked by Anonymous

2006-10-29 02:56:24 · 2 answers · asked by deadlypotent 2

I heard that you can set water on fire if there is methane and a spark- is it true? How is that possible? I thought water doused fire.

2006-10-29 02:47:06 · 10 answers · asked by Gloria S 1

What more is there to say!?!?!

2006-10-29 02:37:24 · 9 answers · asked by Calum H 1

Which element comprises ofver three quarters of the earths atmoshphere?

oxygen
nitrogen
helium
argon

?? please

2006-10-29 02:36:37 · 5 answers · asked by Anonymous

please help me..

2006-10-29 02:00:27 · 3 answers · asked by || tha || 2

it's actually 1 of my homework..
and you know??
my chemical is bad..
so, please help me answer this question..
thanks..

2006-10-29 01:30:27 · 6 answers · asked by || tha || 2

2006-10-29 01:18:01 · 3 answers · asked by mukul 1

i know it has something to do with the charges but please help

2006-10-29 01:11:57 · 7 answers · asked by stace9012003 2

A 34.32 g stainless steel ball bearing at 117.82°C is placed in a constant-pressure calorimeter containing 120.0 mL of water at 18.44°C. If the specific heat of the ball bearing is 0.474 J/g°C, calculate the final temperature of the water. Assume the calorimeter to have negligible heat capacity.

2006-10-29 01:03:22 · 2 answers · asked by Anonymous

i had to pick an element for chemistry and i picked gold. Now i need a cute saying or solgan for gold.

2006-10-29 01:01:27 · 5 answers · asked by benie789 2

why do we use a "blank" in spectrometry ? doesnt that mean the test solution will not obtain all the incoming light rays?

2006-10-29 01:53:15 · 1 answers · asked by may 1

it's 1 of the question that my taecher give to me as a homework..
please help me answer this question..
my chemical is bad..

2006-10-29 01:46:16 · 5 answers · asked by || tha || 2

I really am confused and I dont understand that question.

2006-10-29 01:42:44 · 3 answers · asked by Wade N 1

my bubble mix is
50ml glycerol
300ml dawn
650ml water

i want to let big long lasting floating bubbles that glow in the night (ufo like). i thought about the glow sticks but dont know how they would blend or be efficient with the mix or the ratio. any ideas?

2006-10-29 01:20:57 · 3 answers · asked by BoChOi 3

2006-10-29 01:07:30 · 9 answers · asked by fruit salad 6

i really need one.. i can't think! help..help..help

2006-10-29 01:05:24 · 2 answers · asked by pOp taRts 2

I think that both sugar and salt dont dissolve in petrol. If that is any help.

2006-10-29 00:26:25 · 15 answers · asked by xkyogre 2

i have a small quantity of mercury, just wondering if anyone knows anything cool/neat that can be done with it. i just feel like wasting some time.

2006-10-29 00:25:19 · 6 answers · asked by Andy G 2

I mean which one of them is more use than the ather and why is the detection limit or more esy to use or can we take it to out side to sampling and analysis please tell me
thank you

2006-10-29 00:14:36 · 1 answers · asked by Abdo 1

I know aluminium forms a protective layer of aluminum oxide and hence water does not corrodes it easily.

However, since the oxide is amphoteric, won't it react with acids and subsequently be dissolved?

What is the main reason aluminium cans are used?

2006-10-28 23:16:04 · 4 answers · asked by Anonymous

2006-10-28 22:52:39 · 5 answers · asked by Michael B 1