Chemistry - January 2007

2007-01-14 21:44:39 · 2 answers · asked by Anonymous

2007-01-14 21:41:21 · 1 answers · asked by Anonymous

can u please supply me with pH of other substance..if u know...else answer only these..thank you

2007-01-14 21:22:32 · 7 answers · asked by Anonymous

2007-01-14 20:40:18 · 2 answers · asked by sancherits 2

2007-01-14 20:03:38 · 9 answers · asked by tps0301 1

2007-01-14 19:51:19 · 9 answers · asked by neeraj_agarwal_1990 1

2007-01-14 19:48:21 · 3 answers · asked by chaque 1

2007-01-14 19:30:18 · 6 answers · asked by Yan 1

2007-01-14 19:19:41 · 8 answers · asked by deepak57 7

I am testing which salt (sodium chloride, magnesium sulfate, sodium bicarbonate) is the strongest electrolyte. I have to make a hypothesis, and I don't know why one would be the strongest electrolyte. I know it would have something to do with the greater amt. of ions in the solution the stronger the electrolyte it is, but I don't know which one contains the most ions. If anyone knows please tell me and leave an internet site source that says. I have done all types of research, but can't figure it out. Please, Please, Please help it is urgent!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2007-01-14 19:16:59 · 2 answers · asked by ellen105 2

The actual yield is 1.15 cm, and I need the maximum yield in centimeters, too. If it helps, the 0.001 moles of Pb(NO3)2 are equivalent to 2 mL, and the 0.008 moles of NaI are equivalent to 16 mL.

Please Help!

2007-01-14 18:58:58 · 3 answers · asked by theweirdguy1 2

Help is greatly appreciated.

2007-01-14 18:39:55 · 2 answers · asked by theweirdguy1 2

the kelvin scale has no starting point so how do we know its freezing or boiling?

2007-01-14 18:38:34 · 9 answers · asked by totalangel24 1

A) NaCl
B) NaClO
C) NaHCO3
D) Na2SO4
E) HC2H3O2

2007-01-14 18:27:24 · 6 answers · asked by Palladium 1

I wanted to add 150 mL of 18 M H2SO4 to my drain to clean it, but instead I spilled it on the floor. How much baking soda (grams of NaHCO3) do I need to pour on it to neutralize it?

H2SO4 + 2 NaHCO3 ---> Na2SO4 + 2 H2CO3

2007-01-14 18:09:35 · 4 answers · asked by justinz_1fan 2

Please help me with this one, I am really stumped.

2007-01-14 17:21:17 · 6 answers · asked by Random G 3

2007-01-14 16:01:59 · 6 answers · asked by shygirl 1

2007-01-14 15:46:11 · 3 answers · asked by amazing_sweet_angel 1

I can't seem to remember how to do this question; can someone help?

I know that AU=196.97 from the chart but I'm at a loss for what I am supposed to do next.

2007-01-14 15:38:48 · 9 answers · asked by Missy 2

before and after reaction with chlorine gas to give sodium chloride, NaCl?

2007-01-14 15:32:29 · 4 answers · asked by Emma 1

answer these other questions if you have time...
-Why did Thomson change Dalton's atomic theory?
-What happens to the particles of a substance when it changes from a liquid to become a gas?
-What separates the chemical formulas of reactants from the formulas of reactants of the products in a chemical equation?
-Is salt water a compound? If not, then what is it?
-Copper turns green when it interacts with substances in the air. What kind of change is this?

2007-01-14 15:29:06 · 4 answers · asked by Candace 2

2007-01-14 15:27:52 · 2 answers · asked by bballgirljv 1

Mg (s) + HCl (aq) - MgCl2 (aq) + H2(g)

2007-01-14 15:27:25 · 4 answers · asked by Emma 1

2007-01-14 15:11:06 · 10 answers · asked by Anonymous

2007-01-14 15:09:54 · 7 answers · asked by Anonymous

2007-01-14 15:04:09 · 5 answers · asked by bballgirljv 1

Need to know the number of C-C-C bonds in petane C5H12?
Gronert of UCSF reports bond energies for C-H, C-H-C, etc.
Need to know the number of C-C-C bonds that exist in pentane. Know there are 5 carbon bonds in the formula, 12 C-H bonds, but need the C-C-C bonds.
Thanks, Greg in Alaska

Additional Details

1 hour ago
thanks for the answers. Need to know how many "C-C-C" carbon bonds there are in Pentane, how is this calculated.
I know pentane has 5C bonds, 4 C-C bonds, but how many "C-C-C" bonds.
Thanks much!!
Greg C. from Anchorage, Alaska

2007-01-14 14:59:02 · 2 answers · asked by gregchase2000 1

2007-01-14 14:53:56 · 2 answers · asked by Anonymous

2007-01-14 14:51:57 · 6 answers · asked by Anonymous

2007-01-14 14:51:16 · 1 answers · asked by bballgirljv 1