Chemistry - March 2007

2007-03-19 10:28:09 · 2 answers · asked by jason n 3

I have to figure out the atom occupancy for strontium zincate based on h k l values. I know the compound is orthorhombic and must know figure out if it's primitive, face centered, body centered, or base centered. How do i do this by hkl values?

2007-03-19 10:19:14 · 1 answers · asked by Anonymous

2007-03-19 10:04:39 · 3 answers · asked by Speed, I Am Speed 2

Does carbon dioxide dissolve into 2M dilute hydrochloric acid? Will this only happen under certain circumstances. Please divulge. Oli :D

2007-03-19 09:57:39 · 2 answers · asked by Oli 1

I have to determine the products of these chemical reactions, but i have to idea how to.
Can someone give me some assistance?

CH4 + O2 ->
S + Cu ->
Mg + HCl ->
Mg + O2 ->
FE(NO3)3 + KOH ->
Cu + Ag(NO3) ->
Na2(CO3) + MgCl ->
CaCl2 + H2O ->

Thanks.

2007-03-19 09:53:42 · 1 answers · asked by shontelalala 1

54.53%carbon, 9.15%hydrogen, and 36.32%oxygen; experimental molar mass 88

2007-03-19 09:51:48 · 1 answers · asked by xxlore09xx 1

A gas with a volume of 525mL at a temp of -25C s heated to 175C. What is the new volume of the gas if pressure and number of moles are held constant?

2007-03-19 09:46:40 · 1 answers · asked by Scott S 1

2007-03-19 09:41:39 · 4 answers · asked by Shawntae G 1

2007-03-19 09:38:51 · 8 answers · asked by GaTiTa 1

i need to know what salt is

INSULATOR OR CONDUCTOR
INSULATOR NO... HELP ME

2007-03-19 09:34:42 · 4 answers · asked by katerocks101 2

1. amyl + H2SO4 + butyric acid
2. amyl + H2SO4 + glacial acetic acid
3. Methanol + H2SO4 + salicylic acid
4. ethanol + H2SO4 + Buturic acid

N.B these material come from the lab. Preparation of Ethanoate, an ester

2007-03-19 09:31:03 · 2 answers · asked by jarock nikeebwoy 1

2007-03-19 09:07:17 · 5 answers · asked by Scott S 1

it say's write the dissosiation equations for the following compounds that dissolve(in water). If they don't indecate so...
ex.NaCl(s)--H2O--Na(ag)+Cl(ag)
so i need help on
H2SO4=


Ba3(PO4)2=
JUST SHOW ME HOW TO DO IT
so i can do the rest plz plz plz!!!!!!!!!!!!!!!!!!!

2007-03-19 09:06:14 · 2 answers · asked by Anonymous

And what is it? Because most of the time I only see it in combustion formula so I consider that it is only a fuel.

2007-03-19 09:04:09 · 3 answers · asked by Anonymous

What is the percentage ionization of the solute in a 0.00348 M solution of acetic acid (Ka= 1.8*10-5), in %? I got 7.48%. Can anyone confirm this?

2007-03-19 08:58:43 · 1 answers · asked by Ryan C 1

KHP=potassium hydrogen phthalate=KHC^8H^4O^4

2007-03-19 08:55:44 · 1 answers · asked by mj58 2

using the following test results.

Compound A forms a red-orange precipitate with Benedict's reagent, but does not react with iodoform.

Compound B forms a yellow solid in the iodoform test, but does not react with Benedict's reagent.

I am having a hard time doing this. I need help please.

2007-03-19 08:49:55 · 1 answers · asked by shortydidi03 2

thanks for your help!

2007-03-19 08:36:04 · 6 answers · asked by Georgia S 1

For this chemistry project, i need to figure out how many holes the size of Lake Michigan a mole of M&Ms would fill. Have the volume of an M&M as 1cm^3 and the vol. of l. michigan as 4918 km^3, which i've converted to centimeters to make easier. im a little stuck now with the FLM setup. im not asking anyone to try to do the problem, just to help me set it up correctly. Thanks!

2007-03-19 08:24:57 · 2 answers · asked by swtpeach725 3

(a) NO2
N? O?
(b) FeCl2
Fe? Cl?
(c) Na2Cr2O7
Na? Cr? O?
(d) O3

2007-03-19 08:09:49 · 1 answers · asked by Anonymous

2007-03-19 08:08:04 · 1 answers · asked by III 2

i understand that ammonia is basic but, only as ammonium hydroxide... what i don't get is the dry and wet part... please help.. gotta real big chem exam..

2007-03-19 08:04:04 · 3 answers · asked by Anonymous

I would like to know that why the combination of mentos and pepsi is fatal. So, if any of you knows the answer, tell me please.

2007-03-19 07:41:23 · 11 answers · asked by Sarah 1

i need to know if its good to take chemistry

2007-03-19 07:20:29 · 5 answers · asked by Stop Loss 1

i wont to use the mineral hematite as apegment but its powder is brownish red i wont to change the color of the powder to bright or blood red

2007-03-19 06:40:33 · 2 answers · asked by eldeebminex 2

Which of the following solutions result in a buffer ?



a) 0.050 L of 0.250 M CH3COOH + 0.100 L of 0.250 M NaOH


b) 0.100 L of 0.250 M CH3COOH + 0.050 L of 0.250 M HCl


c) 0.050 L of 0.250 M CH3COONa + 0.100 L of 0.250 M HCl


d) 0.100 L of 0.250 M CH3COONa + 0.050 L of 0.250 M HCl


there can be more than one answer****

2007-03-19 06:03:20 · 1 answers · asked by Jessica R 1

What is the name for a solution that has an excess of H+ and another compond when placed in an aqueous solution.

I want honest answers no guesses

2007-03-19 05:31:49 · 7 answers · asked by Prince_Krona 2

2007-03-19 05:20:02 · 3 answers · asked by anamika 1

2007-03-19 05:11:47 · 2 answers · asked by Anonymous

2007-03-19 04:40:44 · 6 answers · asked by Bugg 2