Chemistry - September 2006

2006-09-20 08:14:05 · 5 answers · asked by ohman33 1

How many moles of carbon atoms are in 4.56g of CH3CH2OH? Do I just count up how many carbons are in the formula?

2006-09-20 08:10:46 · 9 answers · asked by foxtrot 3

An element X combines with oxygen to for XO2. If 24g of element X combines with 16g of O, what is the atomic weight of element X? Is a proportion involved?

2006-09-20 08:08:37 · 2 answers · asked by foxtrot 3

PCC stands for Pyridinium chlorochromate

2006-09-20 07:58:29 · 2 answers · asked by hyperion005 1

Why does it make crystal growth larger?

2006-09-20 07:38:51 · 12 answers · asked by Anonymous

An organic compound containing C,H,O,and S is subjected to two analyitcal procedures. In the first procedure a 9.33 mg sample is burned which gives 19.5 mg of CO2 and 3.99 mg of H2O. IN the second procedure, a seperate 11.05 mg sample is fused (melted) with Na2O2 and the resulting sulfate is precipitated as BaSO4, which (when dried) weighs 20.4 mg( Appropriate amounts of Na2O2 and a compound containing barium ion are added.) The amount of oxegen in the original sample is obtained by difference. Determain the empirical formula of this compound.)

2006-09-20 07:38:19 · 2 answers · asked by lpphysco 2

2006-09-20 07:33:46 · 10 answers · asked by Sir_john_Jr 1

2006-09-20 06:43:42 · 6 answers · asked by spaz2k219090 2

2006-09-20 06:31:23 · 4 answers · asked by Anonymous

2006-09-20 06:21:40 · 5 answers · asked by fozi 1

2006-09-20 06:21:04 · 4 answers · asked by Mukesh P 1

2006-09-20 06:12:56 · 5 answers · asked by fozi 1

How does Sodium Chloride, Potassium Chloride, and Lithium Chloride (powders)react in water

2006-09-20 05:50:08 · 7 answers · asked by Gezza D 2

2006-09-20 05:45:32 · 3 answers · asked by Anonymous

A battery is an example of CHEMICAL potential energy.

2006-09-20 04:56:44 · 9 answers · asked by Anonymous

2006-09-20 04:44:21 · 8 answers · asked by eina 2

2006-09-20 04:44:04 · 21 answers · asked by fatpoop 1

1) Is density a chemical or a physical property? Why?

2) Whats the difference between student error and random error? give 2 examples of each type of error.

If you can answer either questions that would be great
thanks

2006-09-20 04:00:04 · 6 answers · asked by yassem1ne 2

2006-09-20 03:23:55 · 3 answers · asked by Tori T 1

*topic

2006-09-20 02:17:58 · 10 answers · asked by Kairex 1

only after it is boiled again

2006-09-20 02:15:00 · 6 answers · asked by JayBee 1

2006-09-20 01:59:46 · 6 answers · asked by Gareth T 1

need ur help i need a question that can make my research good...like this one...WHY DOES STOMACH remains intach even HCL is present...Please provide me a question that starts with HOW or WHY...

2006-09-20 01:36:24 · 5 answers · asked by Aaron 1

2006-09-20 01:08:35 · 3 answers · asked by Anonymous

2006-09-20 00:28:59 · 14 answers · asked by Team BES 1

2006-09-20 00:26:11 · 12 answers · asked by king 1

2006-09-19 23:52:34 · 7 answers · asked by daniel k 1

What is the process, materials, and laboratory equipments involved in this?

2006-09-19 23:17:10 · 2 answers · asked by cutie_kmp2006 1

I am used to write: 2:8:10:2 (Ti)
Now they use: [Ar] 3d2 4s2 (with Argon being 2:8:8)
Can someone explain all these new notations, like
Se: 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p_x2 4p_y1 4p_z1???
(or where to find this on the web)

2006-09-19 23:14:52 · 3 answers · asked by just "JR" 7

What is the white precipitate formed when carbon dioxide is bubbled thru limewater? and when limewater turns clear after a while, what is the solution ( and equationss)?

2006-09-19 21:43:20 · 6 answers · asked by asf 1