Chemistry - March 2007

2007-03-05 14:29:54 · 3 answers · asked by ♥ <3 3

2007-03-05 14:29:09 · 4 answers · asked by ♥ <3 3

b) which ones have similar solubility?

2007-03-05 14:25:32 · 1 answers · asked by bravestdawg101 3

2007-03-05 14:24:32 · 2 answers · asked by no name 1

a. carbon
b. calcium
c. nitrogen
d. neon

2007-03-05 14:23:42 · 7 answers · asked by Anonymous

a. CO2
b. SiO2
c. BaSO4
d. H2O

2007-03-05 14:22:39 · 4 answers · asked by Anonymous

what are some uses of acids and bases in industry?

2007-03-05 14:22:21 · 1 answers · asked by Alan 2

a. ordinary hydrogen
b. deuterium
c. uranium
d. alpha particles

2007-03-05 14:18:40 · 5 answers · asked by Anonymous

NaF or BaF2 (2 is subscript after F) I know the BaF2 would form the stronger bond, but why?
I am doing ionic and covalent bonding and Lewis dot structure and stuff.
Thanks if you can help.

2007-03-05 14:16:49 · 2 answers · asked by Boo Radley 4

An which nourishment has the most of those neutralizing substances?

2007-03-05 14:09:23 · 3 answers · asked by George Elliot 2

a. metals
b. inert gases
c. nonmetals
d. liquids

2007-03-05 14:09:03 · 3 answers · asked by Anonymous

a. 1H0
b. 1H1
c. 2H1
d. 3H1

2007-03-05 14:04:35 · 2 answers · asked by Anonymous

And how would I USE all of that equipment - could you explain the experimental set-up and method for completing the practical part of the experiment?

2007-03-05 13:59:24 · 2 answers · asked by Daniel Black 1

I don't know how to do these...please help....thanks


Limit ions used to: Ag+, Ba2+, Co2+, Pb2+, Zn2+
Write the net ionic equations where appropriate:

1) Write a reaction that shows how a soluble complex ion is formed wtih a metal ion when excess hydroxide ion is added.


2) Write a reaction illustrating the reaction of a solid metal hydroxide with an acid.


3) Write a reaction that shows how an insoluble metal chloride will dissolve in ammonia to form a complex ion.

2007-03-05 13:54:54 · 1 answers · asked by Captain Whiskerboy Litterbox 3

This was a science experiment. A circuit was made of 2 alligator clips, 1 bulb, 250 mml beaker, funnel, copper sulfate solution, sodium sulfate solution, 50 ml beaker, magnesium strip, copper strip, dialysis tubing, and buzzer

2007-03-05 13:40:11 · 2 answers · asked by Advice Friend 2

a. 1234ml
b. 810.ml
c. 550. ml
d. 450. ml
e. none of these

2007-03-05 13:34:17 · 1 answers · asked by ChristFirst00 2

a. 0.0657
b. 0.00185
c. 1.85
d. 3.52
e. 0.104

2007-03-05 13:27:45 · 1 answers · asked by ChristFirst00 2

i. Sr(OH)2
ii. KOH
iii. NaOH
iv. Ba(OH)2

ii and iv
i, ii, iii, and iv
ii and iii
none of these is a weak electrolyte

2007-03-05 13:24:50 · 1 answers · asked by ChristFirst00 2

I have an Earth Science question that I need help with ..

1,500 calories of heat are added to a 30 gram sample of liquid water. If the water sample started at 25 degrees C, what will the final temperature be ?

2007-03-05 13:16:12 · 2 answers · asked by ♥-Emily-♥ 2

I, being an English/history person rather than a math/Science person find it extremely difficult to make sense of all this jumbled nonsense about protons and neutrons and jimmy neutrons and all of those whatevers!! Soo I was wondering if any science lovin people out there could give me their secret...as in how can I stay awake while reading about all this CRAPPPP? Is there a special way I can think of it to make it easier to retain? Or make it more interesting?? My main problem is that since the words in these science textbooks are not part of my natural vocabulary...I have no idea how to go about remembering ANY OF IT! I could spend a long time reading and re-reading and re-reading and still not be able to tell you one single thing I read about. Is there something wrong with me? Any ideas?

2007-03-05 13:13:40 · 3 answers · asked by Jenn 1

2007-03-05 12:45:01 · 3 answers · asked by jenleebrandt 2

2007-03-05 12:38:43 · 2 answers · asked by abby 1

Please help me out and explain it (idiot proof explanations pleas.)

2007-03-05 12:38:05 · 6 answers · asked by Jenn 1

pH= pKa + log[C2H3O2-]/[HC2H3O2]
thanks!

2007-03-05 12:30:40 · 1 answers · asked by Katrin 1

How many moles of CaF2 will dissolve in 3.0 liters of 0.050 M NaF solution? (Ksp for CaF2 = 4.0 x 10-11)

2007-03-05 12:28:54 · 3 answers · asked by jasmine m 1

A 50.0-mL sample of 0.100 M Ca(NO3)2 is mixed with 50.00 mL of 0.200 M NaF. When the system has come to equilibrium, which of the following sets of conditions will hold? The Ksp for CaF2 is 4.0 x 10-11.

Moles Solid CaF2 Formed [Ca2+] (M) [F-] (M)


A.
5.0 x 10-3 3.5 x 10-4 M 7.0 x 10-4 M

B. 5.0 x 10-3 3.4 x 10-9 M 0.05 M

C. 5.0 x 10-3 2.2 x 10-4 M 4.3 x 10-4 M

D. 5.0 x 10-3 3.5 x 10-4 M 4.3 x 10-4 M

E. 10.0 x 10-3 1.3 x 10-5 M 1.3 x 10-5 M

2007-03-05 12:27:58 · 1 answers · asked by jasmine m 1

My teacher asked us to "Find an article that discusses industrial production of chemicals and the limiting situations that are used". I cannot find any such article. ANY HELP will be greatly appreciated.

2007-03-05 12:17:35 · 2 answers · asked by megamaniac0007 2

The lattice energy of KCl(s) is −715 KJ/mol, and the enthalpy of hydration is −684 KJ/mol. Calculate the enthalpy of solution (KJ) of 0.810 moles of KCl.

2007-03-05 11:58:29 · 4 answers · asked by Anonymous

need it for a lab report, if you don't know the answer please set me on the right way

2007-03-05 11:52:38 · 2 answers · asked by doggydawg 1

Which of the following substances would you expect to dissolve in water?

a) K2SO4

b) CH3OH

c) H3COCH3

d) C (diamond)

e) CH3CN

2007-03-05 11:52:02 · 3 answers · asked by Anonymous