Chemistry - May 2007

2007-05-05 04:13:09 · 2 answers · asked by Anonymous

2007-05-05 01:40:09 · 1 answers · asked by Drummerwife 1

2007-05-05 00:52:16 · 3 answers · asked by pratibha b 1

you can't it!!!!!!!!!! he he he he he

2007-05-04 23:01:41 · 2 answers · asked by harmony 1

Where can I find hydrochloric acid in household materials?

2007-05-04 21:15:12 · 5 answers · asked by formystudies6 1

also of Li2, NO,B2, NO

2007-05-04 21:07:01 · 1 answers · asked by rana h 2

NiCl2(aq) + 2NaOH(aq) → Ni(OH)2(s) + 2NaCl(aq)

How many grams of Ni(OH)2 are produced from the reaction of 30.1 mL of 1.75 M NaOH?

2007-05-04 20:55:42 · 6 answers · asked by Anonymous

2007-05-04 20:54:25 · 5 answers · asked by Anonymous

when to use which?

2007-05-04 20:45:49 · 1 answers · asked by lghri 1

properties, where it was founded & when?

2007-05-04 20:35:06 · 12 answers · asked by utkarsh 1

.. need your answers. i'm just aking

2007-05-04 20:30:41 · 3 answers · asked by rhiza 1

And why?

2007-05-04 20:20:51 · 1 answers · asked by superstar_diva89 1

2007-05-04 20:17:28 · 4 answers · asked by kamran k 1

Calculate standard free energy of formation of 1 mol FeS2 at 25 degree's C

Fe(s) + 2S(s) <-------> FeS2(s)

For Fe at 25 degrees C, Delta S = 27.3 J/mol x K
For S at 25 degrees C, Delta S= 31.8 J/mol x K

for FeS2 at 25 degrees
delta S=52.9 J/mol x K and delta H= -178.2 kJ/mol

a–1.9 × 105 J/mol
b–1.8 × 105 J/mol
c–38 J/mol
d–1.7 × 105 J/mol

2007-05-04 19:45:53 · 1 answers · asked by Blade L 1

2007-05-04 19:36:21 · 1 answers · asked by superstar_diva89 1

atoms of naturally occurring sodium?
a. 22.99
b. 1.62 *10^-11
c. 3.73 *10^-10
d. 7.05 *10^-13
e. 2.24 *10^14

2007-05-04 18:52:50 · 2 answers · asked by Mary 1

is_____
a.18.48
b.45.38
c.68.80
d.81.52
e.31.20

2007-05-04 18:38:47 · 3 answers · asked by Mary 1

2007-05-04 18:12:37 · 2 answers · asked by David K 1

i need to write their grams but i need to know the specific elements in these:copper(ii) sulfate pentahydrate

mercuric oxide

sulfur trioxide

how do i find what they have as in the elements they carry?
like hydrochloric acid has HCL.... that one sounds like the 2 elements but the ones on the top i don't know.

2007-05-04 18:06:01 · 2 answers · asked by Chilly_Baby 1

the coefficient of nitric acid is____
N2O5(g)+H2O(i)--->HNO3 (aq)
a.5
b.2
c.3
d.4
e.1

2007-05-04 17:59:01 · 7 answers · asked by harry p 1

As a science project, I'm growing crystals but instead of how does temperature or amount of solvent etc., (those are fairly predictable and common) I'm doing how the molecular structure can affect the growth rate or process.

For example, many materials can be used for growing crystals, such as salt, sugar, alum, borax, etc. Some form cubic, or other molecular structure and I was wondering- does that have any affect? Will it grow faster, or make bigger crystals, or something?

2007-05-04 17:57:30 · 2 answers · asked by cecikuna 2

2007-05-04 17:55:32 · 1 answers · asked by superstar_diva89 1

I'd just like to find out how vinegar is made. Simple question. Thanks !

2007-05-04 17:06:56 · 5 answers · asked by Sisyphus 1

Thank you

2007-05-04 17:03:40 · 2 answers · asked by Chem Mick 1

I don't whether or not to double major Biology(BMB) with Chemistry major or not. I am doing fine in Calculus in High school. But Im afraid that a chem major might too risky for pre-med. I will also be able to bypass chemistry 1A(introduction chem) since I pass the AP Chem test with a 5. The good thing though about majoring in biology and Chem is that they both overlap a lot.

2007-05-04 16:52:34 · 6 answers · asked by avalentin911 2

Since they often have uneven distribution of charge...

2007-05-04 16:47:02 · 2 answers · asked by NG Yut Sei 1

How old is an object whose current specific activity is 11.3 dpm/g
for a living organism the specific activity is 15.3 dpm/g For carbon 14 t1/2= 5730 years?

a2,506 y
b2,481 y
c1,736 y
d5,730 y

2007-05-04 16:36:28 · 2 answers · asked by Blade L 1

A In a gamma radiation emission, the parent element is different from the daughter element.
B Visible light, ultraviolet light, infrared radiation, x rays, and gamma radiation are all examples of electromagnetic radiation.
C There is no change in atomic mass or mass number in this event.
D This is an example of electromagnetic radiation.

2007-05-04 16:03:35 · 5 answers · asked by Virginia M 1

2007-05-04 15:28:23 · 3 answers · asked by Jessica V 1

i need to know what chloroprene reacts with, list as many as possible,

thank you very much

2007-05-04 14:58:06 · 1 answers · asked by Me + Me = BANG! 2