Chemistry - February 2007

2007-02-05 03:12:06 · 3 answers · asked by Anonymous

I was wondering how C02 is collected? (for things like fire extinguishers, dry ice and such) Can it be taken directly from the air and "bottled", or does it need to come from chemical reactions?

2007-02-05 03:09:57 · 2 answers · asked by eddy f 2

2007-02-05 02:57:11 · 2 answers · asked by Anonymous

Cl2(g) ↔ 2Cl(g)


Cl(g) + CHCl3 → HCl(g) + CCl3 (slow)


CCl3 + Cl(g) → CCl4(g) (fast)

Which of the following are true statements for the above mechanism ?


a) The overall rate law is equal to the rate law of the second step as it appears above

b) k1[Cl2] = k-1[Cl]2

c) Cl(g) is not consumed since it is acting as a catalyst

d) If this is a correct mechanism the observed law would be
Rate = k[Cl2][CHCl3]

2007-02-05 02:12:27 · 3 answers · asked by Foxychick 1

I'm ten years old and I like pop cans eploding but I want to go to the max. I want it to blow like as if a Mento was in it or a little bigger but i don't have any mentos. So i need something else to use.

2007-02-05 01:52:00 · 2 answers · asked by Anonymous

2007-02-05 01:41:32 · 5 answers · asked by anantha kumar a 1

2007-02-05 01:38:46 · 4 answers · asked by Raider 3

2007-02-05 01:31:18 · 2 answers · asked by lakshman teja 1

2007-02-05 01:24:30 · 1 answers · asked by Anonymous

2NO(g) + 2H2 (g) -----> N2 (g) + 2H2Og _______________________________________________________________ Initial Concentrations Initital Rate of (mol/L) Formation of H2O __________________________ (mol/L-s) [NO] [H2] ________________________________________________________________ 0.10 0.10 0.00123 0.10 0.20 0.00246 0.20 0.10 0.00492 __________________________________________________________________

What is the rate constant k for this reaction ?

2007-02-05 01:19:18 · 1 answers · asked by Beth F 1

2007-02-05 01:14:46 · 4 answers · asked by reba 1

2007-02-05 00:56:53 · 6 answers · asked by sheeplover 1

2007-02-04 23:37:41 · 7 answers · asked by bob the monkey 1

please help !!!!!!!!!x x x

2007-02-04 22:58:01 · 2 answers · asked by i-duno bout-much-stuf!-xcept-dis 2

explain pls...

2007-02-04 21:48:20 · 6 answers · asked by Anonymous

plz explain with examples

2007-02-04 21:36:13 · 16 answers · asked by Anonymous

abc of radioactivity

2007-02-04 21:29:18 · 8 answers · asked by Oladipo T 1

2007-02-04 20:02:18 · 1 answers · asked by mia saunders 2

2007-02-04 20:00:24 · 2 answers · asked by Andie 2

You are cooking spaghetti in water you have salted with NaCl. You notice that when the water boils over, it causes the flame of the gas burner to turn bright orange. How would you explain the appearance of a color in the flame?

2007-02-04 18:14:28 · 2 answers · asked by chelsea_cruz20 1

2007-02-04 17:37:28 · 3 answers · asked by kmann882002 2

give me at least 5 substances

2007-02-04 17:28:09 · 4 answers · asked by skyErrSkEe 1

2007-02-04 17:11:59 · 3 answers · asked by Alex A 1

Could anyone please tell me how to test
1. pH value
2. turbbitity
3. [Heavy metal]
4. [Cl]
5. [Mineral]

2007-02-04 16:56:53 · 1 answers · asked by Anonymous

The mass you will use in the lab is in excess of the minimum required. What happens to the unused excess Mg(s)?copper(II) chloride dihydrate is reduced by Mg(s),

a)Nothing happens to the excess Mg(s)

b)Additional HCl(aq) is added and this reacts with Mg(s) to form Mg2+(aq)

c)The excess Mg(s) reacts with the copper compound produced from the original reduction reaction

d)The solution is heated to remove the excess Mg(s)

e)The excess is removed as Mg(s), after all Cu(s) and Mg(s) do not look the same

2007-02-04 16:50:06 · 1 answers · asked by smile 1

2007-02-04 16:42:32 · 5 answers · asked by bonnevie r 1

its the second stepwhen extracting a metal from its ore

2007-02-04 16:33:27 · 10 answers · asked by Anonymous

Can someone explain to me "color" in chemistry terms? I read somewhere that it has something to do with the atoms and when light beams to the protons and when it reflects out, it gives a different color. But I can't find the book now. :/
Someone help?

2007-02-04 15:55:13 · 3 answers · asked by damaged_numbers 1

Lithium
Boron
Nitrogen
Fluorine

2007-02-04 15:51:17 · 2 answers · asked by Heavy Metal 3

unite conversions and Fator label method (chemistry)

2007-02-04 15:46:55 · 18 answers · asked by Tenisha W 1