Science & Mathematics - 22 November 2007

In an sp hibrydized orbial we have 2 hybridized and 2 unhybridized orbitals. What is the order of filling? Do we start filling the hybridized orbitals first or the unhybridized?
E.g. if an atom has 5 valence elctrons, we put 1 on each orbital. but where does the 5th one go?

2007-11-22 02:58:18 · 3 answers · asked by Anonymous in Chemistry

"God created the Earth. O.K. Now the Earth was flat, a disk, so who pray, created the globe??? Could it be that the bible doesn´t really have the faintest clue about anything?

2007-11-22 02:53:06 · 7 answers · asked by RAMANAN. 2 in Astronomy & Space

I notice these lines in the sky, which run from thousands of feet high all the way to the ground. Are they part of the test or is it a natural phenom which occurs because of the blast?

2007-11-22 02:48:45 · 2 answers · asked by Anonymous in Other - Science

2007-11-22 02:47:55 · 2 answers · asked by Anonymous in Chemistry

best answer wins 10 points


star me if u like this question

2007-11-22 02:45:59 · 20 answers · asked by Anonymous in Other - Science

I'm planning on making a geodesic globe for a art class. I'm likely going to do a 320 sided version, as the next biggest one is 1280 sides (correct me if i'm wrong on that). But i need to figure out what size to cut the triangles, is there a basic formula to figure it out? If it helps, i'm likely going to go for something basketball sized or the same size as a standard globe, since i'll likely use one as a shell and cover it with the triangles.

2007-11-22 02:43:06 · 2 answers · asked by Zonglars 1 in Engineering

A 1.9 kg ball is attached to a ceiling by a string. The distance from the ceiling to the center of the ball is 1.19 m, and the height of the room is 3.00 m.

2007-11-22 02:37:40 · 5 answers · asked by Anonymous in Physics

what advantages do RBC get by losing their nucleus?

2007-11-22 02:32:56 · 3 answers · asked by freeze_madhu 1 in Medicine

What is the main role that the frequency plays in passive filter circuits?

2007-11-22 02:31:35 · 5 answers · asked by David Junior 3 in Engineering

2007-11-22 02:30:38 · 2 answers · asked by kakiba 1 in Physics

2007-11-22 02:28:35 · 6 answers · asked by RogerDodger 1 in Mathematics

2007-11-22 02:26:50 · 3 answers · asked by Anonymous in Chemistry

I get it that it's acetic acid, and that is called vinegar. But I just want to know, if I only had the chemical formula, and no where else to look, how would I name that? For example, I have C6H12O6. Without the use of Google, how do I find out what to call this? Thanks!

2007-11-22 02:17:32 · 9 answers · asked by Jennifer C 1 in Chemistry

i cant answer this problem. help me! and also give solutions so i can understand... :

a given mass of He has a volume of 200mL. to what absolute temperature must it be treated to have a volume of 0.8L at 1.2 atm.?

(its related to gas laws like boyle's, charles ,gay-lussacs, combined gas law. ang please remember to use KELVIN because its an abs. temp. ok? {Kelvin=Celsius+273}. TY!)

2007-11-22 02:15:04 · 2 answers · asked by Anonymous in Chemistry

In cyclic voltammetry, a reversible process should have Ic/Ia = 1.
But when its not 1, sometimes it is described as quasi-reversible. When is the process considered reversible / quasi-reversible /Irreversible?

2007-11-22 02:13:53 · 3 answers · asked by Peter E 2 in Chemistry

1+1=?

2007-11-22 02:09:27 · 41 answers · asked by Andrew S 2 in Mathematics

I am in a hotel and the room is really warm but I have some medication that must be kept cool. It is too warm even in the drawers. I haven't access to a fridge
Is there a device that will keep it at the right temperature?

2007-11-22 02:09:16 · 17 answers · asked by jay58 1 in Other - Science

I have to do a report and presentation on "The properties and usage of selected transition elements". I selected iron, cobalt and nickel because somewhere I read that they where special. I wanted to start off by describing some sort of technology that uses iron, cobalt and nickel and then describe the role of each and then describe the properties that make them so usefull. The problem is, I don't know of any such technology, If anyone knows of one or has any general tips or suggestions for me I would appreciate it.

BTW: the presentation is on monday so I don't have time for anything overly elaborate.

2007-11-22 02:07:11 · 2 answers · asked by Anonymous in Chemistry

but did not get the green color that I was expecting.
The chem supply store where I bought this is not very popular so this chemical probably sat on the shelf for a few years.
The chemical is a bit clumpy.
How else can I test this chemical?

BaCl2 2H2O

2007-11-22 02:06:42 · 4 answers · asked by mixmaster2 3 in Chemistry

I have some confusion on the phase of the moon: Full Moon. The confusion is that at the full moon the earth is between sun and when the earth comes in the middle of the moon and the sun then how the light of sun reaches the moon? The sunlight should be stopped by the face of the earth facing the moon.

2007-11-22 02:02:40 · 11 answers · asked by Mazhar H 1 in Astronomy & Space

The question is on my blog
aabhassrivastava.blogspot.com

2007-11-22 01:57:45 · 1 answers · asked by Aabhas S 2 in Chemistry

A mountain rescue team has to send a rescue line across to a climber stranded on a rock face. They cannot reach the base of the face because of obstacles but observe that the angle of elevation of the stranded climber is 26.6degrees and if they move 10metres nearer, the angle of elevation becomes 30.3degrees. How high up the rock face is the climber and how long must the rescue line be in order to reach her?

How do I work this out? I've tried sketching it but I just can't figure out what it should look like. Please help me out.

2007-11-22 01:56:16 · 2 answers · asked by ffxiaddict 1 in Mathematics

Pondering the situation, which seems kind of funny, I thought that maybe the elephant naturally fear that it could scamper up his trunk and suffocate him or cause dreadful harm. Any thoughts?

2007-11-22 01:47:20 · 13 answers · asked by Anonymous in Zoology

2007-11-22 01:47:03 · 14 answers · asked by meatdanloaf 1 in Zoology

2007-11-22 01:42:31 · 11 answers · asked by Clive D 2 in Astronomy & Space

2007-11-22 01:40:36 · 4 answers · asked by Ahmad M. Alawi 3 in Engineering

Desiderata establishes that we are children of the universe and we have a right to be here no less than the trees and the stars. But does our right to be here supercede the right of trees and stars to be here? We go about our daily lives destroying forests for huge industrial Starbuck plantations. We treat dead trees similarly, digging up their fossil remains and burning them, pumping greenhouse gases into our atmosphere. Our activities are changing Earth from a planet that welcomes a huge diversity of life to something far less hospitable for our species.

But what about the stars' right to be here? Quantum theory shows us that on a subatomic scale, we change particle attributes such as spin, location, energy, etc, simply by measuring them. Could the same thing be happening on a cosmological scale? By measuring the amount of dark matter in the universe, could we be changing it from a life-welcoming state to a life-hostile state, thereby hastening its, and our ultimate demise?

2007-11-22 01:39:01 · 7 answers · asked by @lec 4 in Astronomy & Space

I need some examples explained to me to explain why hydrogen bonding is important in biolgical systems please?

2007-11-22 01:32:52 · 1 answers · asked by Info team 2 in Chemistry

full of water in a frozen state wiegh?? this is important

2007-11-22 01:32:22 · 4 answers · asked by Anonymous in Chemistry

as I have heard there is some kind of screen that can be use instead of metal die to transfer heat

2007-11-22 01:27:14 · 1 answers · asked by Suhail Q 1 in Other - Science