Chemistry - September 2006

Cl2, NaNO3, CaO, HBr, CuCl2, AsH3, NO2

2006-09-26 13:18:51 · 2 answers · asked by darkmagician_007 3

2006-09-26 13:14:34 · 9 answers · asked by Anonymous

AsH3, NaNO3, Cl2, NO2, CaO, HBr, CuCl2

2006-09-26 13:09:15 · 3 answers · asked by urlast2003 1

2006-09-26 13:02:39 · 5 answers · asked by marvin_motley 1

2006-09-26 12:56:13 · 3 answers · asked by urlast2003 1

Would results occur with a different type of mentos? Why can't u use a regular mint like peppermint or lifesavers?

2006-09-26 12:47:12 · 5 answers · asked by tallizbeautiful 1

If I find out by midnight I get extra credit. So, if anyone knows why the ideal gas constant is the letter R please tell me why and where you found your information.

2006-09-26 12:25:40 · 4 answers · asked by idknemore 2

2006-09-26 12:15:04 · 15 answers · asked by Kenny N 2

2006-09-26 12:02:38 · 6 answers · asked by Anonymous

Ok i need to know by who and when each of the following elements were discovered.

•Oxygen
•Bromine
•Chlorine

If you can help me thank you sooooooo much!!!

2006-09-26 11:47:11 · 4 answers · asked by melmel_girl_11 2

The electrical charges in an atom are located ____.

1. only in the nucleus
2. on protons and neutrons
3. on protons and electrons
4. on protons, electrons, and neutrons

I'm not sure if its 1 or 3. I think its 3, but i need a definite answer. Plez help

2006-09-26 11:39:43 · 2 answers · asked by xo winter-angel xo 3

2006-09-26 11:31:22 · 14 answers · asked by Anonymous

1major contributions to the atomic theory
2a descrition of their atom model
3was his theory tested and published?
4was valid experimentation done to provide usuable data which supported the theory>?
5was the theory accepted by peers?
6is the theory still applicable today?

answer these questions for the following men:
moseley, leucippus, chadwich, democritus, geiger, aristotle, planck, thomson, millikan, bohr, einstein, dalton, rutherford.

any help is greatly appreciated!! 10 points to who ever can give me the most info!

2006-09-26 10:31:47 · 5 answers · asked by Sammier 1

2006-09-26 10:20:24 · 7 answers · asked by Anonymous

what is the name of the fuel created by mitochondria

2006-09-26 10:09:10 · 3 answers · asked by Ian H 2

ok so for rings and chains of things like glucose, sucrose, fructose, etc. , i dont get how you take it from the chain and put it into the ring...im soooo confused. like
h
I
h- c- oh
I
h- c=O
I
ho-c-h
I
h- c- oh
I
h- c- oh
I
h- c-oh
I
h
HOW DO I GET THIS INTO A RING? dont just show me the ring, actually give me dummy steps to do it. keep in mind im only a freshman haha
ps. the lines separating each scarbon is sopossed to be centered under the "c" i tried to but the computer wont let me

2006-09-26 10:05:12 · 2 answers · asked by Yahoo 1

Also, tearing Mg ribbon, adding HCl to Mg, grinding CuSO4 + 5H20,
heating CuSO4 + 5H20, and mixing NaHCO3 + vinegar

2006-09-26 09:49:49 · 2 answers · asked by jboxman7 2

2006-09-26 09:22:54 · 7 answers · asked by tamantha 1

2006-09-26 09:16:45 · 4 answers · asked by Anonymous

Im stuck! I need to write the net ionic equations for the reaction of Ca(OH)2+ NH4NO3
and
H2SO4 + NaHSO3

For Ca(OH)2 +2NH4NO3 i got products ----> Ca(NO3)2 + 2NH4OH
is the NH4OH insoluble? so my net ionic is
2OH- + 2NH4+ ---> 2NH4OH is this correct?

For the next one, i got
H2SO4 + 2NaHSO3 ---> Na2SO4 + 2H2SO3
which isnt soluble?
what is the net ionic equation for it?
THANKS!

2006-09-26 09:06:07 · 5 answers · asked by Anonymous

and would it be efficient? would you only be able to tip the blade, or could you make the entire blade, or even the entire sword, out of one industrially produced diamond using current diamond processing methods?

2006-09-26 08:55:22 · 20 answers · asked by zingowner 2

Example http://www.emsb.qc.ca/laurenhill/science/silicate.html
When some formations are removed from solution and dried, micro fractures form with disintegration.

2006-09-26 08:26:44 · 1 answers · asked by Anonymous

A pure gold ring with a volume of 1.57 cm cubed is initially at 11.4*C. When it is put on it warms up to 29.5*C. How much heat did the ring absorb? Density of gold is 19.3g/cm cubed. Sorry about all these chemistry questions, I really am usually good at this stuff... I've lost my mind today though. Please help! Thanks in advance... Angel

2006-09-26 08:18:22 · 4 answers · asked by Angel Eve 6

An unknown metal with a mass of 28g absorbs 58 J of heat. Its temp rises from 31.1 *C to 39.9*C. Calculate the heat capacity of the metal. Please let me know how you are doing this, and if there are any short cuts using a TI-89 titanium calculater. Thanks

2006-09-26 07:51:45 · 5 answers · asked by Angel Eve 6

What hapens when this pair is in contact with another oxygen pair(molecule i think). Do they just bounce off each other or are they joined in some way. What as happened to this pairing when a single oxygen atom is joined to two hydrogen atoms to form water. Also if the atmosphere is 80% nitrogen and 20% oxygen (approx), is this air mixture classed as a compound?
Sorry to ask questions out of my depth, but it is distantly related to what I am studying. Thanks.

2006-09-26 07:38:35 · 8 answers · asked by anthony r 1

2006-09-26 07:23:17 · 11 answers · asked by roma r 1

2006-09-26 07:22:19 · 11 answers · asked by isalkeld 2

What volume of 0.1500M KMnO4 would be required to react with 1.00g of formic acid, HCO2H, in acid solution? The unbalanced equation is:
MnO4(negative) + HCO2H ------> Mn2(postive) +CO2

Please can you tell me how to do and please show the steps how to do it...
your help is greatly appreciated.

Additional Details

1) the Mn2(positive) is like the power ( so 2+ is the power of Mn - so its like Mn to the power of 2)

2) MnO4(negative) === the negative is the power so its like --> MnO4 to the power of - (negative)....

2006-09-26 07:10:19 · 2 answers · asked by Anonymous

and
Mg + N2 -->

2006-09-26 07:07:46 · 5 answers · asked by shellyeliz 2

Why does transition metals form coloured complexed ions?

2006-09-26 06:42:56 · 4 answers · asked by lemondevil88 2