Science & Mathematics - 25 November 2007

Predict the bond angles about each nitrogen in the dinitramide ion.
NNN
a. 90°
b.107.5°
c.109.5°
d.120°
e.180°
ONN
a.90°
b.107.5°
c.109.5°
d.120°
e.180°
ONO
a.90°
b.107.5°
c.109.5°
d.120°
e.180°

*Thank you! & Could you also please explain how you determined the answer?

2007-11-25 06:20:59 · 3 answers · asked by Anonymous in Chemistry

It a math promblem and i alway see when im taking my test and i got it wrong again. 2y-6-y-4 ? it is simplify how do u do that plese show how u got the answer also

Another simplify question 4(x-2)-3(2x-6) show answer and how u do it

2007-11-25 06:19:06 · 6 answers · asked by subzero123kid 2 in Mathematics

Why would one have a stronger magnetic field over the other?

Thanks for your input.

2007-11-25 06:17:41 · 12 answers · asked by higherlovetx 5 in Astronomy & Space

The perimeter of a room is the sum of all of the measurements in the room, I got that. However, how do I find the area?

I've heard a few different answers; the main one is length times width. I think that's right, but I just need to make sure that I am doing the right thing before I put it down.

2007-11-25 06:17:20 · 7 answers · asked by Captain SBDA 3 in Other - Science

Given a two-mass pendulum, that is, two masses attached to a rod (of negligible mass) with the pivot point at the middle of the rod, what is the period of the pendulum when released from rest (with the rod horizontal) if one mass is 200 g, the other is 100 g, and the length of the rod from the midpoint to each mass is 20 cm (the rod is 40 cm long in all)?

2007-11-25 06:13:50 · 2 answers · asked by Anonymous in Physics

2007-11-25 06:12:55 · 5 answers · asked by Anonymous in Earth Sciences & Geology

Normal Quantum Number Values are
primary-N: 1 to infinity
secondary-L: 0 to (N-1)
magnetic-M:-L to +L
spin-S: +1/2, 0, -1/2
What if I change some of them, and my new set of quantum number values is:
primary-N: 1 to infinity
secondary-L: 0 to N
magnetic-M:-L to +L
spin-S: +1, 0, -1

Can you please tell me how this would change the electron configuration of an element, and therefore how the location would change on the periodic table of elements?

Can you please five me the old and new electron configurations for some elements of your choice so that I can understand better?


Thanks soooo much!!!

2007-11-25 06:11:23 · 3 answers · asked by Bollywood Masti 4 in Chemistry

Rewrite the equation 4x – 10y = 11 as a function of x.
Show steps

2007-11-25 06:10:27 · 2 answers · asked by Sara R 1 in Mathematics

and despite the presumably uniform depth, would the moons influence still produce a bulge on its side of the planet......
ie what are the depths with..or without a moon?

2007-11-25 06:10:06 · 9 answers · asked by Anonymous in Astronomy & Space

2007-11-25 06:09:56 · 8 answers · asked by Anonymous in Geography

How do we know if it is a planet?
I saw something in the sky today (25th) and it was really bright like a moon at 5:40-6:30 am in the morning. but then i got a camera and it was green with things around it. It started puffing things up, like explodtions. I was wondering if it was a planet and if you know which planet or if it was just a moon.

2007-11-25 06:09:49 · 5 answers · asked by ♪ღ♥sweetberry♥ღ♫ 3 in Astronomy & Space

Find all relative extrema of the function. Use second derivative test if applicable.

f(x) = x/x^2 - 1

2007-11-25 06:05:47 · 1 answers · asked by Anonymous in Mathematics

A(aq)+B(aq)-->AB(aq)
Info:
Specific heat=4.18J/(g*'C)
Density= 1.02g/mL
Solution A, =25.0 mL, 0.60 M, 21.4'C
Solution B, =25.0 mL, 0.60 M, 21.4'C
Solution AB, =1.0 mole, 25.3'C

2007-11-25 06:05:37 · 1 answers · asked by Anonymous in Chemistry

2007-11-25 06:03:04 · 7 answers · asked by adc8602 1 in Other - Science

I am excellent in astronomy, so if you get this question correct, I will choose you as the best answer and u get 10 points.
:)
Do you think PLuto is a plpanet?
Why or why not.
It's your opinion...

2007-11-25 06:02:34 · 12 answers · asked by Starr 2 in Astronomy & Space

(log2X)^2 - log2X^2 + 2 =0

2007-11-25 05:58:35 · 3 answers · asked by Anonymous in Mathematics

2007-11-25 05:56:26 · 3 answers · asked by ****** 2 in Astronomy & Space

Onions are classified as green plants (not related to those green onions or spring onions). Where in the onion plant are these green cells located?

2007-11-25 05:56:24 · 3 answers · asked by Amber 1 in Botany

in the impossible quiz

2007-11-25 05:56:24 · 4 answers · asked by Anonymous in Mathematics

do u know y the sky is blue ? lets see if u do!

2007-11-25 05:55:54 · 8 answers · asked by blaqkaudiorox 2 in Astronomy & Space

Subtract mixed numbers: Write answer in simplest form.

6 1/5 - 2 2/3=

2007-11-25 05:55:13 · 9 answers · asked by Anonymous in Mathematics

I started at 10mg and now I am at 20mg and I do not feel anything. I have been considering concerta or adderal but my doctor wanted to test some things out first. How should I go about asking to switch if needed?

2007-11-25 05:55:10 · 2 answers · asked by needanswer 1 in Medicine

2007-11-25 05:55:07 · 9 answers · asked by Anonymous in Physics

My husband ask this one, because he wonders how informative Yahoo Answers are? He doesnt believe me.....lol
Lets show him!

2007-11-25 05:54:30 · 13 answers · asked by ****** 2 in Astronomy & Space

with the formula C6H12O6

2007-11-25 05:54:02 · 5 answers · asked by Anonymous in Biology

2007-11-25 05:53:34 · 0 answers · asked by =)* 1 in Biology

I have a project due in a few days. I have to make a time machine. WE just finished reading the book by hg wells.
This is not gonna be used for "time travel" cause we all know its impossible.
I just need ideas on hwo to make one.

2007-11-25 05:53:18 · 4 answers · asked by nicolee 1 in Engineering

please I need an explanation of what it means when we say that cirrent (I) is proportional to voltage (V)...
Thanks

2007-11-25 05:52:30 · 3 answers · asked by mibg 1 in Physics

I know that no one really knows that answer unless you were there, but your opiniions would help with my daughter with her curiosity/essay.

2007-11-25 05:51:47 · 15 answers · asked by ****** 2 in Astronomy & Space

A 0.20 kg baseball moving at +20.60 m/s is slowed to a stop by a catcher who exerts a constant force of -351 N.
How long does it take this force to stop the ball?
How far does the ball travel before stopping?

2007-11-25 05:49:07 · 1 answers · asked by andyjumpman23 3 in Physics