Science & Mathematics - 27 August 2006

2006-08-27 08:36:32 · 23 answers · asked by sivarajan t 1 in Botany

How would you separate a mixture of octane, a major component in gasoline, and methyl t-butyl ether, a gasoline additive? Assume they have different boiling points and give a one-word answer.

a. filtration
b. distillation
c. chromatography

2006-08-27 08:36:15 · 5 answers · asked by Anonymous in Chemistry

im curious to know!

2006-08-27 08:34:26 · 8 answers · asked by BUM 1 in Medicine

If I had a beam or a rod 100 billion miles long, attached to a planet as the pivot point, when I turn my very long rod, isn't the long end going to zip through space much faster than the speed of light?

Example: If I could attach a 100 billion mile long rod to my hand as I sweep my hand across the sky at night, isn't the long end moving faster than the speed of light, since my very long hand is covering these massive distances?

CO

2006-08-27 08:29:51 · 9 answers · asked by Anonymous in Astronomy & Space

This is a math problem dealing with order of operations. Use ( ), addition, subtraction, multiplacation, or division signs to fill in the blanks and solve the problem.

2006-08-27 08:28:46 · 6 answers · asked by Anonymous in Mathematics

im doing a research project about hipparchus but cannot find when he invented the planispheric astrolabe, and cannot also find when he was born and when he died

2006-08-27 08:28:14 · 2 answers · asked by C♥ 4 in Astronomy & Space

Which of the following statements is true?

a. A heterogeneous mixture consists of identical particles equally spaced in a common volume.
b. A homogeneous mixture does not have the same composition throughout on the molecular level.
c. A mixture consists of particles that are identical on the molecular level.

2006-08-27 08:26:11 · 5 answers · asked by Anonymous in Chemistry

If surface area of the world is A, and the solar energy per unit of surface are is B, could humans ever harness more energy than AB?
What I mean is, though solar energy seems an infinite, really, we could only get as much as hits earth. Right?

2006-08-27 08:23:35 · 5 answers · asked by thezeus18 2 in Astronomy & Space

one third divided by four fifths and how do i do it in my ti-83 plus

2006-08-27 08:23:09 · 4 answers · asked by toast4_3 3 in Mathematics

87878878788

2006-08-27 08:22:35 · 11 answers · asked by Aaliyah C 1 in Mathematics

when removing the water of crystalisation, you are required to heat till constant weight. what does that mean?

2006-08-27 08:22:15 · 6 answers · asked by whack 1 in Chemistry

2006-08-27 08:20:51 · 4 answers · asked by Shay-Shay 1 in Chemistry

You have a bag with 45 marbles: 20 red, 15 green, 10 blue. You're drawing six. What are the odds they're all red? What are the odds they're all the same color?

For the first, I'm just flat-out doing (20/45)*(19/44)*(18/43)*...*(1... I think that's the right way, but I'm not positive.

For the second, I think it's ((20/45)*...*(15/40))+((15/45)... - or, to sum it up, the odds of each all-one-color result.

Is that the right way to do this?

2006-08-27 08:17:46 · 3 answers · asked by Anonymous 3 in Mathematics

This wouldld help greatly with my geometry. i dont really get what the pythagorean thyrum is.

2006-08-27 08:17:27 · 5 answers · asked by ? 1 in Mathematics

2006-08-27 08:15:46 · 9 answers · asked by curious party 1 in Biology

2006-08-27 08:12:07 · 4 answers · asked by Have a nice day 1 in Other - Science

I'm looking for something my 11 year old son can do to help him with his math skills but have fun doing it.Do you have any suggestions?

2006-08-27 08:10:44 · 5 answers · asked by ms lady 1 in Mathematics

Write ionic and net ionic equations for the following reaction

Na2S(aq) + ZnCl2(aq)

someone please help me!

2006-08-27 08:10:28 · 5 answers · asked by dingdong 1 in Chemistry

A good well developed problem and a nice way to analyze the data and come to a conclusion about the problem.

ex. effect of ..... on .....

any good topics or titles?

2006-08-27 08:08:39 · 4 answers · asked by cheezzznitz 5 in Mathematics

the father is Rh-positive and a homozygous, and the mother is Rh-negative. their first child is normal, but the second has hemolytic disease. Why is the first child normal?

2006-08-27 08:08:23 · 4 answers · asked by Anonymous in Biology

2006-08-27 08:07:25 · 3 answers · asked by Have a nice day 1 in Chemistry

2006-08-27 08:06:20 · 3 answers · asked by stacey358 1 in Other - Science

what would i do to find that out? what procedures? plzzzz i need help i dont kno wat 2 do

2006-08-27 07:57:18 · 11 answers · asked by mrsmoss3791 1 in Physics

2006-08-27 07:54:38 · 10 answers · asked by steven e 7 in Weather

2006-08-27 07:54:25 · 30 answers · asked by Anonymous in Earth Sciences & Geology

2006-08-27 07:53:24 · 4 answers · asked by Bellicose 3 in Astronomy & Space

2006-08-27 07:51:42 · 12 answers · asked by not very smart algebra dude. 2 in Mathematics

As An Example I will tell you it is not human because humans are for the most part social gregarious creatures.

2006-08-27 07:43:46 · 17 answers · asked by Anonymous in Zoology

NaF.
Pb.
CH4.
Ar.

2006-08-27 07:39:49 · 8 answers · asked by im M 1 in Chemistry

2006-08-27 07:39:39 · 6 answers · asked by InnerGuard 2 in Physics