Chemistry - December 2007

A solution contains 0.837M Li^+ and 7.32 X 10^-2M CO3^-2. What type of solution is this with respect to lithium Carbonate? Compare your Q and K. (Ksp=1.70 X 10^-3)
a. saturated
b. unsaturaed
c. supersaturated

can someone please help me answer this question? and show the answer is reached.
thank you

2007-12-09 13:04:33 · 1 answers · asked by abc 1

2007-12-09 13:03:43 · 2 answers · asked by lucky 1

Please show process not just the answer

2007-12-09 12:06:14 · 5 answers · asked by jamin7_cda 1

2007-12-09 11:38:00 · 2 answers · asked by Christina 1

I have an answer of 2.43E23 atoms, which I have yet to get. Any help is great! Thanks

2007-12-09 10:52:11 · 4 answers · asked by JCF87 2

The volume of a gas is 4.30 L, measured at 1.00 atm. What is the pressure of the gas in mmHg if the volume is changed to 9.89 L?

2007-12-09 10:38:14 · 3 answers · asked by dmastrovich 1

2007-12-09 10:35:59 · 3 answers · asked by Anonymous

2007-12-09 09:57:45 · 1 answers · asked by Anonymous

1) Where do the 2 hydrogens bond to the sulfate ion? I know that sulfate has a tetrahedral geometry - 4 oxygens surrounding a central sulfur - so I'm assuming the hydrogens bond to two of the Os. But if so, which 2 do they pick? Adjacent ones or opposite ones? And maybe the Hs bond to just one of the Os! I really have no idea.

2) It *is* true that what is generally considered to be "sulfuric acid" is actually "H2SO4 gas dissolved in water," correct? If so, what's the name for H2SO4(g)? Just hydrogen sulfate?

2007-12-09 09:51:38 · 2 answers · asked by AxiomOfChoice 2

1. Elements in the middle of the periodic table are known as these kinds of metals...
-rare earth metals
-noble
-transition
-naturally

2. These gases are considered inactive. They do not react with other elements...
-rare earth metals
-noble
-transition
-naturally

3. For convenience, these are placed at the bottom so the periodic table does not become too wide to be represented in chart form...
-rare earth metals
-noble
-transition
-naturally

4. There are 92 elements, from hydrogen to uranium that occur in this manner...
-rare earth metals
-noble
-transition
-naturally

2007-12-09 09:21:01 · 4 answers · asked by Anonymous

true or false

2007-12-09 09:04:51 · 2 answers · asked by Anonymous

2007-12-09 09:00:04 · 2 answers · asked by Anonymous

2007-12-09 08:53:28 · 3 answers · asked by 0 2

My essay is on Mercury (element). I want something "cute" if you will, or something funny. Don't point out the obvious and put stuff like "Mercury" or "Mercury the Element"

2007-12-09 08:52:08 · 5 answers · asked by ULikeyDaMuffinz? 3

2007-12-09 08:48:25 · 2 answers · asked by Anonymous

2007-12-09 08:37:24 · 2 answers · asked by Dustin S 2

Your roommate made a slippery mess of soap all over the place, so you plan to neutralize it with acid. You grab a beaker with 16.3 grams of a STRONG ACID, but when you get to your bathroom, you've forgotten what kind of acid it is and worry about it eating through the pipes.
Naturally you test it to find that:
1) adding a Pb 2+ solution yields a precipitate
2) titrating with 201.5 mL of 1.00 M NaOH neutralizes the acid.

Which strong acid did you pick?
a) HF
b) HCl
c) HBr
d) HI
e) HNO3

I know that it isn't going to be HF because it is a weak acid, and I know that it won't be HNO3 because Nitrates are soluble. So it has to be HCl, HBr, or HI because the all form precipitates with Pb 2+. I just don't know how to use the titration data to deduce the identity of the acid.

2007-12-09 08:21:26 · 1 answers · asked by Guinness 3

I want something "cute" if you will, or something funny. Don't point out the obvious and put stuff like "Mercury" or "Mercury the Element"

2007-12-09 08:19:39 · 12 answers · asked by ULikeyDaMuffinz? 3

2007-12-09 08:18:36 · 9 answers · asked by sdlove9090 3

The human enzyme alcohol dehydrogenase, contains Zn 2+ ions. If one molecule of the enzyme weighs 1.328 * 10^(-19) g, and it is 0.327% Zn by mass, how many Zinc ions are present per molecule of enzyme?

a)1
b)2
c)3
d)4
e)5

2007-12-09 08:09:54 · 1 answers · asked by Guinness 3

A. THORIUM-229
B. THORIUM-228
C. THORIUM-230
D. THORIUM-231

2007-12-09 08:08:48 · 5 answers · asked by Anonymous

Tell me about the experiments to find it. Thanks.

2007-12-09 08:05:50 · 2 answers · asked by sabanguvenc 1

Pure oxygen gas was first prepared by heating mercuric oxide, HgO:

what volume (in liters) of oxygen at STP is released by heating 10.57 g of HgO?

2 HgO(s) --> 2 Hg(l) + O2(g)

2007-12-09 08:02:29 · 3 answers · asked by Mike R 2

2007-12-09 07:55:16 · 10 answers · asked by ??? 3

We are doing elements in this class.
And i need major help!!I was listening in class,I just dont get it.
But here is a problem i need help on.

Directions: Classify the following compounds as Ionic(Metals && NonMetals), Covalent (metals or nonmetals) or both (compounds containing the polyatomic Ion. )


Note: Parentaseth[sp] is for the Charge.
or the OPPOSITE of Powers.
1.) CaCl(2)
2.)Co(2)
3.)H(2)O
4.)BaSO(4)

Can someone atleast explain this to me??
Thanks.
Amanda

2007-12-09 07:49:24 · 1 answers · asked by Mandi 2

an electric current can be used to decompose, or break down, water into oxygen gas and hydrogen gas. this is an example of a

a. physical change
b. chemical change
c. change in state
d. pressure change

please tell me the answer and y that is the answer!!!

2007-12-09 07:44:11 · 5 answers · asked by ? 2

2007-12-09 07:43:37 · 4 answers · asked by alex 1

2007-12-09 07:26:25 · 4 answers · asked by KC 1

Why are the molecules of liquids harder than the molecules of soilds? Could you plz explain to me?

2007-12-09 07:19:11 · 1 answers · asked by Anonymous

an example problem is Propanoic Acid (CH3CH2COOH) has a Ka of 1.34x10^-5 . A 25.00ml sample of .100 mol L-1 propanocic acid is titrated with .100 mol L-1 NaOH solution, added from a buret.

a) What volume of NaOH is needed to reach the equivalence point?

b) Find the pH when 0.0 mL of NaOH is added.

I really need help with part B i figured out part A for the most part...i need to know where to start and what the heck to do. please help.

2007-12-09 07:14:30 · 3 answers · asked by not sure 2