Chemistry - March 2007

Predict the solubility of lithium fluoride, carbon tetrafluoride, SiC, and Mg in an organic solvent?

2007-03-15 10:50:32 · 1 answers · asked by solomon d 1

2007-03-15 10:32:26 · 1 answers · asked by homa d 1

An acidic solution is prepared by diluting a stock hydrochloric acid solution. If 12.76 mL of a 0.0576 M. HCl(aq) sol. are diluted to a final vol. of 500 mL, what is the final pH of the solution? (assume complete dissociation of the strong acid)

Please explain how you got your work.. this problem has get me really stuck!

2007-03-15 10:27:53 · 3 answers · asked by Anonymous

Predict the electrical conductivity of lithium fluoride, carcbon tetrachloride, SiC, and Mg in solid state?

2007-03-15 10:26:07 · 2 answers · asked by solomon d 1

Please write and balance the following chemical equations.....
1) Hydrogen plus oxygen yield water.
2)Nitrogen plus hydrogen yield ammonia.
3) Aluminum bromide plus chlorine yield aluminum chloride and bromine.
4) Hydrochloric acid plus sodium hydroxide yield sodium chloride plus water.
5) Iron plus lead (II) sulfate react forming iron (II) sulfate plus lead.
6) Potassium chlorate when heated producers potassium chloride plus oxygen gas.
7)Sulfuric acid decomposes to form sulfur trioxide gas plus water.
8) Sodium oxide combines with water to make sodium hydroxide.
9) Potassium iodide reacts with bromine forming potassium bromide plus iodine.
10) Aluminum plus oxygen gas form aluminum oxide under certain conditions.
Thank you all everyone!!!!

2007-03-15 10:19:33 · 3 answers · asked by lover2 1

2007-03-15 10:16:30 · 1 answers · asked by Anonymous

2007-03-15 10:11:14 · 0 answers · asked by Vincent Raymond H 1

2007-03-15 10:09:52 · 7 answers · asked by hello_goodbye 2

2007-03-15 09:59:58 · 4 answers · asked by Anonymous

If the ksp number is higher does that make it more or less soluble? Thanks

Ex: BaSO4 Ksp=1.01 x 10^-10
and CaSO4 Ksp=7.1 x 10^-5

2007-03-15 09:53:12 · 2 answers · asked by Angel Eve 6

Where do the atoms get their symbols


e.g. Iron = FE

why is it FE?

i need to find out:

IRON
COPPER
SODIUM
POTASSIUM

thanks for you time!!!!

2007-03-15 09:52:26 · 7 answers · asked by Anonymous

2007-03-15 09:49:37 · 7 answers · asked by Ryan S 1

Calculate the potassium ion conc. (in mol/L) in a sol. prepared by adding 124.7 mL of a 0.412 M KNO3 (aq) sol. to 156.1 mL of a 0.269 M K2SO4(aq) sol. Assume volumes are additive.

If someone could show me how they get the answer to this that would be great.

Many thanks!

2007-03-15 09:43:53 · 3 answers · asked by Anonymous

What makes lead so special to use in acid-battery. Why is lead used? What does it do?

2007-03-15 09:41:37 · 1 answers · asked by Anonymous

Fe atoms are in .256 mole of Fe?
Kr atoms are in 3.87 g of Kr?

2007-03-15 09:37:21 · 3 answers · asked by Anonymous

does anyone know where I can get a safety sheet for lead (II) ethanoate solution?

2007-03-15 09:33:58 · 2 answers · asked by Anonymous

equation of...ammonium react with chlorine? (such as chlorine in household bleach)

what is the formula and the name for the toxic gas formed?

2007-03-15 09:31:39 · 5 answers · asked by farfalle 2

2007-03-15 09:26:37 · 4 answers · asked by A 2

2007-03-15 09:24:27 · 1 answers · asked by Miss LaStrange 5

does anyone know how to balance the following?:

a strip of lead (+2) metal with alumium nitrate
Potassium chromate with barium nitrate
Sulfuric acid with ammonium hydroxide
C2H6 burned at night

2007-03-15 09:21:54 · 3 answers · asked by Emily 2

2007-03-15 08:59:22 · 2 answers · asked by Anonymous

2007-03-15 08:45:50 · 6 answers · asked by Anonymous

2007-03-15 08:29:56 · 6 answers · asked by Anonymous

at the top of a mountain an egg is heated in boiling water for four minutes and is found to be uncooked. explain why

2007-03-15 08:26:08 · 3 answers · asked by cutie pie! 3

In which of these closed containers is the vapour pressure the greatest? Explain your choice;
a) a 1L container with 5mL of water held at 20 degrees celsius
b) a 2L container with 15mL of water held at 30 degrees celsius
c) a 3L container with 500mL of water held at 25 degrees celsius

2007-03-15 08:23:39 · 2 answers · asked by cutie pie! 3

At 100 degrees Celsius, Kc=0.078 for the following reaction:

2SO2Cl2 (g) > SO2 (g) + Cl2 (g)

In an equilibrium mixture of the three gases the concentrations of SO2Cl2 is 0.136 M and SO2 is 0.072 M. What is the [Cl2] in the equilibrium mixture?

kindly explain on how to get the answer.
your answer serves as my reviewer to our finals.
thank you very much.

2007-03-15 08:22:49 · 1 answers · asked by -three31one- 1

answers:
1) heat stored in
2) stored in
3) rate of
4) change in

2007-03-15 08:14:19 · 9 answers · asked by tia 1

Atomic number equals the number of ____ or ____. Atomic mass equals the number of ____ + _____.
What are the blanks?
I can figure out the rest.

abd Thank you!!

2007-03-15 08:13:32 · 5 answers · asked by Anonymous

2007-03-15 08:13:02 · 5 answers · asked by Anonymous

I was watching this show on Discovery about people stranded on an island without fresh water. I was wondering what would've happened if they boiled the salt water and collected the vapor to drink.

2007-03-15 08:00:40 · 3 answers · asked by cpuvvada 2