Science & Mathematics - 11 July 2007

In doing a flame test...
Why is it that you have to subject the sample to a flame?

What will happen if the flame test is performed on a solution with more than one metal component?

Aside from the qualitative analysis of metals, state at least one other application of flame tests.

2007-07-11 10:44:43 · 3 answers · asked by aishawarya 2 in Chemistry

2007-07-11 10:42:02 · 2 answers · asked by shaz 1 in Engineering

Find the slope of the line passing through the points (2, –7) and (1, 0).
I'm lost on slopes. can someone explain? Thanks so much :)

2007-07-11 10:39:29 · 10 answers · asked by Anonymous in Mathematics

Can someone please tell me how to solve this?

2007-07-11 10:32:14 · 5 answers · asked by jared c 1 in Mathematics

2007-07-11 10:24:12 · 14 answers · asked by JAMES 4 in Medicine

Marco Polo discovered Australia (ignoring some thousand people), Kolumbus discovered America (to blind to see some hundred tribes) ... and what about you?

2007-07-11 10:20:52 · 12 answers · asked by perdü 5 in Geography

Find the radius of a circle with center (4,1) if a chord of length 4 sqrt of 2 is bisected at (7,4)?

2007-07-11 10:20:00 · 3 answers · asked by sweet_candy 2 in Mathematics

2007-07-11 10:16:05 · 4 answers · asked by andrew 1 in Zoology

Does the point (3,-4) lie on a circle whose center is at (-2,3) and passes through (5,8)?

what does "passes through means"?....

2007-07-11 10:13:03 · 10 answers · asked by sweet_candy 2 in Mathematics

im in summer school for first semester geometry my test and my finla is tommarow im getting a 51 percent in the class i need sum advise on what key things to study today to pass the tests and pass the class what should i focus on that is the most important ? please give real answers no BS

2007-07-11 10:11:13 · 6 answers · asked by antelias 2 in Mathematics

is it possible there's going to be an apocalypse? is it just a legend or is it really possible? how would this world end? a giant explosion? supernatural powers? a black hole?

2007-07-11 10:10:23 · 17 answers · asked by Anonymous in Astronomy & Space

2007-07-11 10:05:59 · 3 answers · asked by Anonymous in Astronomy & Space

ive been looking for this answer but can't find it.

2007-07-11 10:05:02 · 14 answers · asked by dee 1 in Astronomy & Space

whats the point of scientists trying to find life on other planets but then if they found it they are hiding it.

2007-07-11 10:04:34 · 6 answers · asked by Anonymous in Astronomy & Space

2007-07-11 10:03:55 · 36 answers · asked by Anonymous in Mathematics

Blackhole, Dna changes, pyramids, and pole shifts...

2007-07-11 10:01:55 · 28 answers · asked by dee 1 in Astronomy & Space

2007-07-11 09:58:16 · 7 answers · asked by Anonymous in Mathematics

2007-07-11 09:56:50 · 5 answers · asked by Jeanette 6 in Engineering

We all know that light travels at approximately 186 thousand miles per second in a vacuum. If a glowing light bulb was traveling through space at half the speed of light would the light shining from the light bulb be traveling at 186,000mps away from the source, or would it be compared to a static object resting somewhere in the universe? I hope you all understand what I'm asking. Let me know if you don't. Thanks!

2007-07-11 09:56:41 · 11 answers · asked by justask23 5 in Astronomy & Space

Is there any way that I can convince them of it's practicality as a dating tequnique?

Convincing links please!

2007-07-11 09:55:23 · 7 answers · asked by April M 2 in Earth Sciences & Geology

2007-07-11 09:54:48 · 9 answers · asked by bob b 2 in Mathematics

my friend told me that in science her teacher told her that nobody has ever been to the moon.
that the government lied to us and the pictures of neal armstrong and the videos of him on the moon were all a scam just to make money....
is this true?

2007-07-11 09:52:41 · 16 answers · asked by shannon <33 1 in Astronomy & Space

I've been told they don't exist over 20,000ft, but Base camp is 17,500ft. Does anyone know how much of a problem they'll be climbing up to just over 17,500ft?

Thanks

2007-07-11 09:52:24 · 2 answers · asked by Caroline L 2 in Geography

2007-07-11 09:50:34 · 10 answers · asked by Girl 3 in Astronomy & Space

2007-07-11 09:49:31 · 6 answers · asked by Girl 3 in Astronomy & Space

Gravity studies by spacecraft, seismic wave studies, measurements by subterranean probes, or oil well drillings??

2007-07-11 09:47:58 · 5 answers · asked by Girl 3 in Astronomy & Space

2007-07-11 09:47:30 · 24 answers · asked by gavin b 1 in Zoology

The first person to answer correctly will be awarded best answer.

Calculate the voltage across the 7.300 Ohm resistor. Please show your work.

http://www.geocities.com/trunks11111/theresistors.jpg

2007-07-11 09:44:37 · 4 answers · asked by Nate-dawg 2 in Physics

...4...............?
------ = -----------------
x+2.......(x +2)(x+1)

please ignore the dots. thank you

2007-07-11 09:44:33 · 5 answers · asked by Anonymous in Mathematics

2007-07-11 09:41:16 · 5 answers · asked by Dr. Vargas 2 in Mathematics