Science & Mathematics - 2 January 2007

I know that I've been posting homework questions up...but I'm in desperate need of help..because Chemistry is confusing to me..and this packet doesn't go along with the book we read. So please...if you're not interested in helping me with homework questions...then please help in terms of not leaving unneccessary comments. I appreciate it. Thank you!

if there are just a few that u know the answers to..it would help me a lot still...u don't have to answer it all. I thank you all for ur time..and help!!!

1. The boiling point of an amine is (lower) than the boiling point of an alcohol.

2. Amines act as (strong bases)

3. Amines are less polar than (alcohols)

4. An amide bond is also called a (peptide bond)

5. An amino group is (polar)

AGAIN...thank you for ur help!!!

2007-01-02 17:25:43 · 3 answers · asked by 2Quinn 2 in Chemistry

It looks really weird. There is the moon and then there's a huge circle like circling the moon. I don't know how go explain it. It sorta reminds me of an 8-ball. What causes that? Is it like an eclipse or something?

2007-01-02 17:22:08 · 18 answers · asked by Kim 3 in Astronomy & Space

2007-01-02 17:21:03 · 3 answers · asked by m&ms 1 in Mathematics

2007-01-02 17:19:53 · 17 answers · asked by Princess 2 in Zoology

2007-01-02 17:15:37 · 5 answers · asked by m&ms 1 in Mathematics

question- there are 12 points in a plane out of which 5 are collinear. The maximum number of distinct quadrilaterals which can be formed with vertices at these points is_____ ??
my answer-
quadrilateral can be formed of four points, so i take 4 points out of 12 in 12_C_4 ways.
then, these also include the quadrilateral formed by 5 collinear points (which actually form no quadrilaterals) , therefore, i subtract 5_C_4 from 12_C_4 and i get the answer as 490.
BUT THE ANSWER GIVEN IS 420.
plz help me........im totally confused to why im getting the wrong answer....

2007-01-02 17:12:10 · 2 answers · asked by practico 1 in Mathematics

2007-01-02 17:08:26 · 6 answers · asked by mike a 1 in Mathematics

I often see small airplanes across the clear blue sky leaving sort of smoke/fog forming a line spliting the air. The airplanes go back and forth and in time the sky is not as beautiful as it was with those smog spreading all over.

Are they trying to create clouds in dry weather to induce rain? For what its worth I hate see my clear blue sky ruined.

2007-01-02 17:07:54 · 9 answers · asked by coza b 2 in Weather

2007-01-02 17:02:28 · 11 answers · asked by connie 2 in Mathematics

2007-01-02 17:00:07 · 9 answers · asked by Anonymous in Mathematics

2007-01-02 16:57:12 · 6 answers · asked by m&ms 1 in Mathematics

Good luck.

2007-01-02 16:55:03 · 13 answers · asked by Malice 3 in Astronomy & Space

I also read about these people in an old National Geographic magazine i had and it made me think about genetic drift and genetic diversity, could this genetic trait be the result of genetic drift?

http://en.wikipedia.org/wiki/Vadoma there's the link about these people.

2007-01-02 16:52:11 · 9 answers · asked by Anonymous in Biology

2007-01-02 16:49:27 · 6 answers · asked by arlene h 1 in Other - Science

I'm thinking of writing a sci fi story. Humans have colonized the Jovian moons. Being humans, they create huge amounts of waste and garbage (from things imported from other planets.) They use Jupiter as a big garbage dump. How much garbage would they have to toss onto Jupiter before it becomes so massive, it turns into a star? Is this even possible- is it correct to assume that adding mass will eventually cause the planet to become a star, or are other conditions needed?

I realize that garbage might not be nearly enough to tip the scales. Do you have any ideas on what humans COULD toss into Jupiter, or cause to crash into Jupiter (like asteroids... "Let's get rid of those pesky asteroids by shoving them into the nearest planet! Traders between Earth and Jupiter always have to go around the darn things...") Is that enough mass?

2007-01-02 16:49:11 · 14 answers · asked by Anonymous in Astronomy & Space

I mean once the box is open its gona be terribly hard to shut if at all. While its true that great good could come from it so could great bad as far as for humans that is. Its probably great for anything that can use nanotechnology better then us... Examples might be intelligent micro organizims and such... How are we to say there arnt any intelligent life forms smaller then us living on this planet just waiting for us to build nanotechnology for them? I'm not saying this is a huge possiblity but wouldnt it be nice if we could just take a break from advancing technology and instead try to learn what all we can do with the technology we have now and expand our minds before we go into the next level of technology...

2007-01-02 16:48:56 · 6 answers · asked by magpiesmn 6 in Engineering

Anyone know?

2007-01-02 16:47:01 · 6 answers · asked by Anonymous in Chemistry

solid A 25 degrees C, while C4H8 is a gas @ 25 degrees C.

2007-01-02 16:45:50 · 2 answers · asked by Hally berry 3 in Chemistry

(9/x-5)-1=(8/x+5)

2007-01-02 16:45:26 · 8 answers · asked by Nikitty 2 in Mathematics

the hybrid orbitals formed by " mixing" one d, one s and 2 p orbitals?????

how many of the hybird orbitals would u be fromed by the mixing????

man i need help!!!!!!

2007-01-02 16:44:03 · 1 answers · asked by Hally berry 3 in Chemistry

the length of the arc of the curve y ^2 = x ^3 cut off by the line x=4 is ?

2007-01-02 16:41:39 · 4 answers · asked by m&ms 1 in Mathematics

Thank God.
Last two questions of the night!!!
Thanks so much for the previous help...
but could you pitch in just one more time?
Thanks!
THATS GREATTT!
-Megan

2007-01-02 16:39:37 · 5 answers · asked by Anonymous in Mathematics

expalin why you would expect BeF2 molecule to be linear but an SF2 molecule to be angular????
thaknz guys be4 hand!!!!!

2007-01-02 16:39:36 · 1 answers · asked by Hally berry 3 in Chemistry

2007-01-02 16:39:13 · 4 answers · asked by Chase 4 in Astronomy & Space

1. Have you quit smoking and did you use the patch? did it help?
2. What other things helped with quitting?
3. How much did you smoke? (I've smoked two packs a day for quite a few years).
4. When do the cravings stop?
5. Have you tried a drug such as Wellbutrin?.. or similar?

2007-01-02 16:38:12 · 23 answers · asked by mosaic 6 in Medicine

How many eggs do they reproduce? size and stuff...
Thanx

2007-01-02 16:35:06 · 1 answers · asked by Beach_Chick 1 in Zoology

Why do ships sink there? Why do radio's get messed up while in that area? etc.

2007-01-02 16:32:13 · 7 answers · asked by Fearfully & wonderfully made 4 in Other - Science

Please and thankyou

2007-01-02 16:31:58 · 10 answers · asked by S 3 in Mathematics

2007-01-02 16:30:24 · 2 answers · asked by chamelean75 2 in Botany

I'm having a lot of trouble with this. i get 1/x+y(1+dy/dx)=
I don't get how to differentiate the right side. In an example in my book they used 2^2/x and set the exponent to u making it u=2x^-1 and found du/dx= -2x^-2 or -2/x^2. and then plugged into the original problem you get -2e^(2/x)/x^2. i put the paranthesis there so it doesn't get confusing. so if anyone can help me get the right side im sure i'll be able to solve this problem. thanks again =D

my detail button doesn't work so i hadda to post again!! thanks loll.

2007-01-02 16:30:18 · 6 answers · asked by Anonymous in Mathematics