Chemistry - February 2007

a)Select a water soluble compound of lead . Give its name and formula
b)Select a water insoluble compound of lead. Give its name and formula.
c)Select a water soluble compound of another cation which will produce your answer (b) when its solution is added to a solution of your answer to (a). Give its name and formula.
d)Write full equation for the reaction described in (c).
e)Write an ionic equation for the reaction described in (c).

The chart of various cations is here:
http://www.geocities.com/xfsgpr/cations.jpg ...

The last few characters should be: xfsgpr/cations.jpg

Thank you.

2007-02-01 10:45:35 · 4 answers · asked by Anonymous

SCl2

ZnO

CCl4

BH3

(NH4)3PO4

Rb2S

Fe(CLO4)3

N2O4

Al2S3

Mn(No3)3

2007-02-01 10:39:49 · 8 answers · asked by M T 3

2007-02-01 10:38:19 · 18 answers · asked by VirgoOne 1

A. Kinetic
B. Mechanical
C. Gravitional
D. Nuclear
E. Wind

2007-02-01 10:33:58 · 4 answers · asked by Anonymous

HELP PLEASE!

2007-02-01 10:33:21 · 6 answers · asked by *Lily* 3

1. Supposed you have unmarked bottles of water, sodium carbonate, and barium chloride. Could you tell which was which by looking at the bottle? Explain.

2. How could you tell the difference between unmarked bottles of barium chloride and potassium hydroxide?

4. Silver nitrate forms a colorless solution. So does ammonium nitrate. How could you prove that a colorless solution was silver nitrate instead of ammonium nitrate?

2007-02-01 10:16:01 · 1 answers · asked by Celia 4

Do lighters explode in the toaster oven? Why or why not?
Do lighters explode in the car? Why or why not?
Do lighters explode in the dryer? Why or why not?

2007-02-01 09:59:57 · 1 answers · asked by queenz_killarep 2

These are some chemistry equations given to us and they are the ones I could find or figure out. Please help.I got the other 12 but these four have me stuck.

2007-02-01 09:53:54 · 1 answers · asked by scubaguffey 1

In the years following the French Revolution, Joseph Gay-Lussac made several important discoveries about how ages combine. For example, he noted that three volumes of hydrogen react with one volume of nitrogen to form two volumes of ammonia. Keep in mind that in those times, scientists did not know about atoms or formulas of compounds.
a) Write a balanced chemical equation for this reaction.
b) How does this equation relate to Gay-Lussac's findings?
c) What can you infer about the contents of two equal volumes of reacting gases?
d) What word could be substituted for the word "volume" to describe this reaction on the simplest level?
e) What type of reaction did Gay-Lussac perform?

2007-02-01 09:33:12 · 1 answers · asked by San Fran Kid 2

what is fluoride made from, is it a metal,chemical etc?

2007-02-01 09:32:38 · 5 answers · asked by Anonymous

Im in an intro chemistry class and we are learning electronic configuration. Can someone explain the orbitals on the periodic table and how it relates to the electronic configuration of an element. For example, our instructor said Cl is 1s2 2s2 2p6 3s2 3p5..

2007-02-01 09:27:06 · 2 answers · asked by Toothie 2

How long would it take, in minutes, for the person in the above question to walk off all the calories in the one brownie ? Walking requires energy equal to 2.5 times the basal metabolic rate.

Do NOT consider the energy needed to digest, absorb, and metabolize the snack itself, which the text describes as 10% of the ingested amount of food. Use the total amount of the energy in the one brownie in your calculation.

2007-02-01 09:23:26 · 2 answers · asked by Anonymous

Assume that 3.33 x 106 kJ are needed to heat a swimming pool. If this energy is derived from the combustion of methane (CH4) at standard conditions (25 oC and 1 atm) what volume in liters of methane must be burned?




The heat of combustion of methane is 889.967 kJ/mol. The density of methane is 0.0680 kg/m3


thank you!

2007-02-01 09:23:23 · 3 answers · asked by Jessica R 1

I have checked wikipedia already...
one of the things I'm supposed to specify for my science class project on Cobalt is whether or not Cobalt is a compound or not. I also would like to know what Cobalt is used in...I have all the other info I need, and "fun facts" are greatly appreciated.

2007-02-01 09:22:53 · 3 answers · asked by lacantante 2

Please tell me how to do this problem..

2007-02-01 09:15:51 · 11 answers · asked by TERRI L 2

what makes my element mercury have different properties from the 2 elements that are its "neighbors" on the periodic table. elements to the left and right-- except H
please help
i needd help for my project .

2007-02-01 09:14:21 · 2 answers · asked by Neetu 1

A solution is made up by weighing out 20g of sodium ethanoate, NaO2CCH3 dissolving in water and making up to a volume of 250mL.

(a) How many moles of sodium ethanoate were used?

2007-02-01 09:07:11 · 2 answers · asked by simplicety 1

the iodine was prepared by ourselves.

2007-02-01 09:01:10 · 3 answers · asked by slick_chick 2

I need to know which metals rust please tell me.

2007-02-01 08:59:57 · 14 answers · asked by mlmj1994 2

Please help, doing a diabetes assignment.

2007-02-01 08:55:34 · 7 answers · asked by bug 3

2007-02-01 08:54:34 · 5 answers · asked by Limeboy 1

I know Oxygen is diatomic, but I'm still confused. If it has twice as many atoms, what differene does that make- you still have the same number of atoms, 6.02x10^23. What difference does it make if they are paired up? Unless the atomic mass of ONE Oxygen atom is 16.00, is that it? Please explain it to me. Thanks.

2007-02-01 08:53:53 · 4 answers · asked by fslcaptain737 4

2007-02-01 08:47:21 · 4 answers · asked by tha dutchess 1

I am doing a project in my science class and I need to know a lot of facts on the element titanium, like atomic mass, symbol, price, etc. But I can't find the family that titanium belongs to. Help!

2007-02-01 08:46:57 · 3 answers · asked by klgirl1992 1

CH3CH2CH2BrCH2CH2 (CH2OH) CH2CH2CH3

2007-02-01 08:43:30 · 1 answers · asked by jeanettervetr 2

I need 100% liquid ammonia for a small expirement I am working on. Ammonia hydroxide will not do. Anybody know where I can purchase a small quantity of ammonia (if B&M, I'm in central Texas)

2007-02-01 08:38:08 · 7 answers · asked by tenaza 2

2007-02-01 08:31:42 · 3 answers · asked by goring 6

2007-02-01 08:29:58 · 1 answers · asked by Elizabeth L 1

I need to do a project and i cant find any information on aluminums fracture,aluminum cleavage and chemical formula of aluminum!! If you do find information please give me the wedsite!!
Thanks!!!!

2007-02-01 08:26:47 · 2 answers · asked by Anonymous

2007-02-01 08:25:36 · 4 answers · asked by Anonymous