Chemistry - January 2007

2007-01-28 18:59:05 · 2 answers · asked by adrianbernardo 1

2007-01-28 18:23:42 · 12 answers · asked by Chi B 1

2007-01-28 17:59:43 · 1 answers · asked by trieshiella 1

2007-01-28 17:57:55 · 1 answers · asked by trieshiella 1

number of neutrons?

electrons?

valence electrons?

2007-01-28 17:56:06 · 2 answers · asked by STUFF 2

2007-01-28 17:44:02 · 3 answers · asked by bo_elvis@sbcglobal.net 1

Have I got this right?
Intracellular concentration of Ca++ is 90 mg/l

Assume mw of Ca is 40.

Then is it 2.25 millimole/litre?

2007-01-28 17:32:06 · 3 answers · asked by Anonymous

2007-01-28 17:32:05 · 2 answers · asked by rina j 1

At 25C the heat of fusion of aluminum is 10.6kj/mol adn the heat of sublimation is 326.4kj/mol. what is the heat of vaporization at 25C?
a. 158.2kj/mol
b. 169.5kj/mol
c. 315.8kj/mol
d. 337.0kj/mol
i have the worst teacher!

2007-01-28 17:22:46 · 1 answers · asked by Shawn 1

if rat poison and harsh chemicals are some of the ingredients ,what else is in there,and how is that then made edible?and if i,who knows very little about drugs,has heard this then surely the type who buy it would be aware of this too. i wouldnt touch it let alone eat it! can someone enlighten me a little?,

2007-01-28 17:06:56 · 6 answers · asked by pugsaleena 4

It's so gross.

2007-01-28 16:54:25 · 3 answers · asked by Robby 2

2007-01-28 16:49:45 · 1 answers · asked by kelxcore09 1

I am having a bit of a hard time with my Chemistry homework. Here's the problem:

Arrange the following in order of decreasing length: meter, mile, centimeter, micron, angstrom, foot, inch, kilometer.

I think the correct order is angstrom, micron, centimeter, inch, foot, meter, kilometer, mile. Is this right? If not, please let me know where I went wrong.

I appreciate your help :)

2007-01-28 16:40:45 · 4 answers · asked by SportsFan 3

2007-01-28 16:38:34 · 5 answers · asked by Anonymous

2007-01-28 16:31:28 · 4 answers · asked by saam 1

Describe the "properties" of the baking soda

How many elements/molecules are in baking soda and what are they?

Is baking soda a "compound"? why?

is baking soda a base or acid? why?

what is the pH level?

2007-01-28 16:28:15 · 2 answers · asked by STUFF 2

2007-01-28 16:25:17 · 5 answers · asked by jinjalina 2

2007-01-28 16:19:52 · 2 answers · asked by john m 1

2007-01-28 16:16:22 · 3 answers · asked by Nicole G 2

Describe the "properties" of the baking soda

How many elements/molecules are in baking soda and what are they?

Is baking soda a "compound"? why?

2007-01-28 15:54:27 · 6 answers · asked by STUFF 2

2007-01-28 15:50:09 · 14 answers · asked by Anonymous

2007-01-28 15:35:15 · 2 answers · asked by -jAiVe- 1

2007-01-28 15:34:30 · 1 answers · asked by -jAiVe- 1

Chemisty...

2007-01-28 15:28:16 · 3 answers · asked by mattportner 1

2007-01-28 14:43:59 · 4 answers · asked by Raymond P 1

is it the small or the large graduated cylinder? pls. explain your answer.

2007-01-28 14:36:09 · 4 answers · asked by chelsea_cruz20 1

How do the valence electrons change form the left side of the periodic table to the right

2007-01-28 14:35:40 · 7 answers · asked by Anonymous

please help i have a few more questions to go thanks to all that help

2007-01-28 14:32:41 · 1 answers · asked by SImmone W. 2

Fluorine and Chlorine are gases, Bromine is a liquid, and Iodine is a solid.
Which of the following statements are true about these elements?

1. All of the molecutes are diatomic.
2. All of the molecules are non-polar.
3. The intermolcular forces increase as you move down the family because of larger electron clouds producing induced dipoles.
4. The intermolecular forces increase as your move down the family because of increased shielding.

(Note)Can be any combination of the choices above.

2007-01-28 14:16:28 · 3 answers · asked by BlaireOboe 1

Does anyone know this question:
Which of the following reactions represents the Haber process to synthesize ammonia

A.N2(g)+3H2(G) <-->2nh3(g)
B. NaCl(aq) + H2O (l) --> NaOH(aq)
C. 2NO(g) + O2(g) -->2NO2(g)
D. 2S(s) +3O2(g)-->2SO3 (g)

thanks, and if you can tell me how you know it/how you do it that would be helpful!!

2007-01-28 14:12:35 · 6 answers · asked by nice too meet you. 4