Chemistry - September 2006

2006-09-27 23:21:15 · 6 answers · asked by blah blah 1

2006-09-27 23:17:21 · 7 answers · asked by Rocky R 1

2006-09-27 22:24:10 · 5 answers · asked by Anonymous

Is it possible to create a leathal bacteria that causes the symptoms of a particular disease, but which also reacts fatally to the curitive of that disease?

For example, call it bacteria A1. You inject someone with A1 and they get the symptoms of cancer. However, upon treatment with chemotherapy, the A1 reacts with the chemo and kills the subject instantly. Can that be done?

2006-09-27 22:21:51 · 5 answers · asked by Anonymous

2006-09-27 22:21:10 · 5 answers · asked by Anonymous

here with reference to threshold i mean the energy required 2 make elements lose electrons

2006-09-27 21:19:53 · 1 answers · asked by Alishan A 1

...the velocity of an air parcel moving in that path ignoring any other forces (like Coriolis, etc.)? I think Bernoulli's equation might work here but I'm not sure.

2006-09-27 20:40:42 · 1 answers · asked by JoeSchmo5819 4

2006-09-27 20:05:38 · 5 answers · asked by chellbell 1

it is said to have chair form and boat form, and they are strain free and torsion free, so can anyone explain me what is torsion free.

2006-09-27 17:58:39 · 2 answers · asked by maulik g 2

What is the frequency of an electromagnetic wave (EM) which has an energy of 217 KJ?

use the equation
E=hv
E=energy of wave
h=6.63x10^-34
v=frequency (waves per second)

is the answer 3.3x10^-30?
or is it 3.3x10^-33?

2006-09-27 17:28:17 · 2 answers · asked by Anonymous

should it be AISO4

2006-09-27 17:26:15 · 8 answers · asked by xiy 3

2006-09-27 17:18:41 · 6 answers · asked by T W 1

If 0.673g of Cu is reacted with excess nitric acid to form 0.990g of copper nitrate, what is the percent yield of copper nitrate in this reaction, from the stoichiometry, it is known tgat 1.000g Cu should form 2.952g of copper nitrate?

2006-09-27 17:03:42 · 4 answers · asked by Anonymous

I can't solve this problem. Can someone show me how to get this and show me the work?

2O3(g) --> 3O2(g) Delta H= -427 kJ
O2(g) ---> 2O(g) Delta H= 495 kJ
NO (g) +O3(g) --> NO2(g) + O2(g) Delta H= -199 kJ

What is the delta H for the reaction
NO(g) + O (g) --> NO2(g)

2006-09-27 17:02:17 · 1 answers · asked by Anonymous

How do you do a hybirdization of CH4 or even a H2S?

2006-09-27 16:54:48 · 3 answers · asked by Anonymous

2006-09-27 16:13:20 · 3 answers · asked by Anonymous

I think it's dry air but I don't know why...

2006-09-27 16:07:42 · 4 answers · asked by SQY 1

2006-09-27 16:04:50 · 2 answers · asked by ohman33 1

2006-09-27 15:58:45 · 3 answers · asked by Anonymous

2006-09-27 15:54:49 · 1 answers · asked by velammal 1

Why is the actual yield of a reaction almost always smaller than the theoretical yield? Can the percent yield of a chemical reaction ever exceed 100%?

2006-09-27 15:20:58 · 2 answers · asked by Anonymous

I need some ideas...

2006-09-27 15:06:07 · 3 answers · asked by Woo_go_Portugal 1

For a chem homework question;
"Criticize the statemen 'all solids will melt if heated to a high enough temperature.'"

2006-09-27 14:57:04 · 5 answers · asked by fingersxcrossed 1

How do u determine the number of subatomic particles if given the atomic number and mass?

2006-09-27 14:43:04 · 2 answers · asked by Anonymous

2006-09-27 14:43:03 · 1 answers · asked by abbie h 1

2006-09-27 14:27:44 · 2 answers · asked by **palestine** 1

the Schrödinger equation, has an i explicitly in it and y is inherently a complex-valued function.

Does quantum mechanics need complex numbers? Couldn't one express y as the linear combination of two real fields, f and g, where y = f + i g. By substituting this expression into the Schrödinger equation, you could develop two equations for the two unknown fields f and g. Do you think that quantum mechanics demands complex numbers, or complex numbers are simply a convenient way of expressing things?

2006-09-27 14:23:12 · 2 answers · asked by nathaniel49 2

2006-09-27 14:16:06 · 3 answers · asked by Kandii-Boo! 1

2006-09-27 14:14:16 · 4 answers · asked by Ms.LuPee ♥♥♥♥ DraKe 3

2006-09-27 14:04:41 · 9 answers · asked by martin46 1