Chemistry - March 2007

I have the following homework problem
"An ionic compound with isoelectronic anions and cations. (Isoelectronic means the same number of electrons.) The anion is formed by the most electronegative element. Crest and Colgate toothpaste contain this chemical.

Write the chemical formula and the name of the compound.

What common product(s) is the compound found in?

Use the following website as a reference: http://www.saveyoursmile.com/toothpaste/toothpaste-c.html "

Fluoride is the most electronegative, but I don't know which one (sodium monofluorophosphate, stannous fluoride, or sodium fluoride) has isoelectronic anions and cations. Thanks

2007-03-10 04:39:18 · 3 answers · asked by Anonymous

I had left-over spagetti in the fridge which I covered with a store brand foil. When I took the foil off to prepare it for eating about 3 days later it had deteriorated to a point of at which holes could be seen in the foil and the deteriorated foil bits had stuck to the spagetti. I wound up throwing the leftovers out.

2007-03-10 04:35:44 · 2 answers · asked by md.pierce 2

i watched the patriot last night, and the guy (mel gibson) had like little strips of metal to make little bb's... would it be possibly to melt aluminum over a fire.. the melting point of aluminum was around 600 degrees celsius nad like maybe 1300 degrees farenheit, i dont remember.. is this possibly and what are the chances of me doing it?

2007-03-10 04:04:13 · 4 answers · asked by austinblnd 4

Please List

2007-03-10 04:01:38 · 5 answers · asked by chrstl_garcia 1

2007-03-10 03:52:46 · 2 answers · asked by chrstl_garcia 1

meldrum's acid separation from meldrum's acid +con.H2So4+isopropyl alchohol mixture

2007-03-10 03:44:13 · 1 answers · asked by mullapoodi v 1

CO is deadly to the human body as it can compete with success with oxygen for hemoglobin. Knowing the concepts stated in Le Chatelier's Principle, how can CO poisoning in the body be reversed?
Hb(O2)4 + 4CO <---> Hb(CO)4 + O2

[a] Increasing the pressure of O2
[b] Decreasing the amount of Hb
[c] Increaing the amount of Hb
[d] increasing CO2 pressure
[e] increasing CO pressure

I believe it is A because if the pressure of O2 is increased, it's concentration will increase, sending the reaction in reverse, and also giving O2 more opportunities for it to bind to hemoglobin. The rest do not make logical sense to me.

Any thought and comments are welcome.

Thanks!

2007-03-10 03:43:19 · 4 answers · asked by Adam C. from Italy 1

A. 0 K
B. 0°C
C. 0°F
D. -273 K

2007-03-10 03:27:32 · 5 answers · asked by Anonymous

A collection of such molecules would form a

A. liquids
B. amorphous solids
C. crystalline solids
D. gases

2007-03-10 03:26:29 · 3 answers · asked by Anonymous

2007-03-10 03:20:45 · 6 answers · asked by Anonymous

Relative to their original average energy, what is the new average energy of the molecules?

A. four times as great
B. twice as great
C. half as great
D. the same

2007-03-10 03:20:28 · 4 answers · asked by Anonymous

It is for a science project. I was think of using styrofoam balls. How do i put it all together, (like how many protons, electrons, neutrons) to put in it. So if anyone has any ideas they would help!

Thanks

2007-03-10 03:12:19 · 1 answers · asked by Anonymous

2007-03-10 03:11:23 · 6 answers · asked by vishesh s 1

2007-03-10 03:07:21 · 7 answers · asked by tracylclark03 1

A. There is no order in the motion.
B. There is no uniformity of speed or direction.
C. There is a definite average speed at a given temperature.
D. There is a definite average direction of motion at a given temperature.

2007-03-10 03:05:14 · 3 answers · asked by SpiderMan 1

A. liquids
B. gases
C. amorphous solids
D. crystalline solids

2007-03-10 03:04:22 · 4 answers · asked by SpiderMan 1

2007-03-10 02:56:51 · 1 answers · asked by Ryan R 1

ok, i have this question i have no clue how to answer it.. please help me! =) thx! it sais..

*describe thomson's,millikan's, and rutherford's contributions to atomic theory. Include their experiments if appropriate*

2007-03-10 02:54:57 · 5 answers · asked by Anonymous

Do those two subtances have different effect?

2007-03-10 02:30:40 · 1 answers · asked by manjuthestar 1

Hydrochloric acid is widely used as a laboratory reagent, in refining ore for the production of tin and tantalum, and as a catalyst in organic reactions. Calculate the moles of solute in 62.85 mL of 0.453 M hydrochloric acid. (M = 36.46 g/mol)



a. 0.0285 mol

b. 0.00721 mol

c. 0.139 mol

d. 1.04 mol

2007-03-10 02:24:57 · 3 answers · asked by godrics 2

2007-03-10 02:01:47 · 8 answers · asked by Anonymous

sience stuck!!!!!! HELP(:

2007-03-10 01:03:28 · 3 answers · asked by angelicgurl 1

2007-03-10 00:27:02 · 1 answers · asked by iask 2

The answer is neither coloid, solution, nor aqueous

2007-03-10 00:20:18 · 11 answers · asked by Zyxsy 1

In what way is salad cream diffrent from both oil and water?

2007-03-10 00:15:47 · 7 answers · asked by gem--b 1

Thanks guys, any help will be great. It's an As Level past paper Chemistry question, I have answered it but I think I've gone wrong. I also have to explain how each type of isomerism arises?

2007-03-10 00:01:41 · 7 answers · asked by Anonymous

2007-03-09 23:58:47 · 4 answers · asked by iask 2

2007-03-09 23:30:31 · 3 answers · asked by cookies_rule_91 3

chemical bonding

2007-03-09 23:26:57 · 12 answers · asked by jkool 1

2007-03-09 23:20:07 · 6 answers · asked by iask 2