Chemistry - September 2006

2006-09-02 21:45:42 · 3 answers · asked by Anonymous

2006-09-02 21:31:16 · 6 answers · asked by Anonymous

2006-09-02 20:38:15 · 2 answers · asked by Anonymous

2006-09-02 19:14:18 · 12 answers · asked by mehr t 1

2006-09-02 19:12:33 · 7 answers · asked by mehr t 1

2006-09-02 18:25:55 · 8 answers · asked by andy l 1

When ammonium nitrite (NH4NO2) is heated, it decomposes to give nitrogen gas. This property is used to inflate some tennis balls.
A. Write a balanced equation for the reaction.
B. Calculate the quantity in grams of NH4NO2 needed to inflate a tennis ball to a volume of 86.2 mL at 1.20 atm and 22 degrees C.

2006-09-02 18:15:53 · 2 answers · asked by Lorenz 2

In addition to the previous question about splitting the Hydrogen from Water, some people mentioned electrolysis. My husband thinks that just as fuel and air are compressed to create the movement in pistons in an engine, that Hydrogen in its pure form could be harnessed to do the same thing. One would have to incorporate the electrolysis process into the engine. What do you think of the possibilities of that?

2006-09-02 18:10:58 · 6 answers · asked by Mandy A 2

2006-09-02 18:07:25 · 19 answers · asked by sniff my finger 1

Discuss the following phenomena in terms of the gas laws;
A. the pressure increase in a car tire on a hot day
B. the "popping" of a paper bag
C. the expansion of a weather ballon as it rises in the air
D. the loud noise heard when a lightbulb shatters.

2006-09-02 18:07:04 · 1 answers · asked by Lorenz 2

If you wanted to use hydrogen as an energy source, how would you strip the Hydrogen molecules from Water (the H2 from the H20)

2006-09-02 18:03:35 · 6 answers · asked by Mandy A 2

if you ever noticed, while in a room, with even just two people or more, you will always find an idealist and a realist in some kind of debate or attraction?

2006-09-02 17:54:44 · 6 answers · asked by Anthony H 1

Place 1/2 cup of evaporated milk in the glass. Add calamansi juice drop by drop to the evaporated milk.

2006-09-02 17:29:39 · 5 answers · asked by yerbz 1

2006-09-02 15:45:39 · 12 answers · asked by wrong answer 2

1.what is the meant of frequency of wave?
2.what are the units of frequency?
3.Describe the relationship between fresquency and wavelength.

2006-09-02 15:32:28 · 9 answers · asked by Al3x_Dogg 2

There are 92 which are ? and
11 that are
and they are either inert or active in varying degrees.

2006-09-02 15:29:41 · 9 answers · asked by Littlebigdog 4

In keeping with the 2nd Law of Thermodynamics, all energy transfers are sloppy. This means that a great deal more energy must be put into something before you can hope to get even a minuscule percentage of that energy back. Because lipids contain such a high amount of energy that serves a wide degree of functions (they are used to power both biomechanics and automobiles), this implies that an even greater amount of highly specialized energy must first go into its production.
Considering that lipids are a biomolecule, produced only by living or dead organisms (right?), and are also essential for the survival of all living organisms, how could they be produced by non-biological means? Are there any theories? Any experiments? I am very familiar with the Urey-Miller experiment, but that only seems to apply to very basic, unshaped amino acids in an unusable ratio and under impossible circumstances. Any ideas would be appreciated.

2006-09-02 15:24:45 · 3 answers · asked by Anonymous

WHAAAA!!! its for my chemistry project!!!!!!!!!!!!!!! WHAAAAAAAAAAAAAAAAAAA

2006-09-02 15:19:37 · 2 answers · asked by mng03 2

while we know that water is H2O, how is it that we are so sure that it looks like three circles connected by two bonds of varying strength? how is it that chemists can be so sure about the structures of most molecules, and the innards of an atom? since you can't take a picture, you must guess, right? then why is it always taught with such certainty and authority?

2006-09-02 15:19:09 · 3 answers · asked by 123456 2

I am not sure if I am counting pi electrons correctly. Or are they both aromatic, with 6 and 2 pi electrons respectively?

2006-09-02 14:41:24 · 3 answers · asked by Maria T 1

how to make a good baking soda and vinegar bomb

2006-09-02 14:25:42 · 9 answers · asked by Anonymous

H(C4H7O2) <-> C4H7O2- + H+

Given that [C4H7O2-] = 3.8 x 10^-2 M and [HC4H7O2] = 1 M, calculate the concentration of H+.

Ka = 1.444 x 10^-5

2006-09-02 11:44:45 · 3 answers · asked by RED MIST! 5

2006-09-02 10:49:31 · 7 answers · asked by Anonymous

Is taking O.chem, physics, and biology feasible in one semester? I know all three require me to attend lecture and lab, but since I have no idea how hard all the three classes are, I don't know whether it is doable? Well, I'm sure it is doable if this material comes natural to some people. I'm currently taking calculus, university english, physics, and general college chem. If I continue with this route, I'll be taking the classes listed above in 2 semesters. So, I guess my question is should I spread out my science classes with some easier classes, and spend an extra year in college?

2006-09-02 09:53:32 · 7 answers · asked by Anonymous

2006-09-02 09:21:44 · 4 answers · asked by winston m 1

2006-09-02 08:19:15 · 2 answers · asked by karl 1

Is it 5 sig figs or 3? There's a rule that says the zeros between two numbers (1-9) are significant, so are the two 0's significant?

2006-09-02 08:03:31 · 9 answers · asked by Toppledate 2

why does not this liberate h2

2006-09-02 08:00:36 · 5 answers · asked by Anonymous

2006-09-02 07:31:42 · 7 answers · asked by Cali 1

I have the diameter of a galvanized washer coated in zink. I have to find the surface area of the washer, while ignoring the outer and inner side rims. I also have to find the volume but i do not have the height. I really need to know what i can do to solve this problem.

2006-09-02 07:22:30 · 5 answers · asked by proudmom2be05 1