Science & Mathematics - 6 November 2007

Determine the oxidation numbers for each of the indicated elements in the following molecular species.

(a) N in NO2-

(b) Cl in ClO4-

(c) P in P2O5

(d) O in H2O2

(e) Fe in Fe(CN)6 ^3-





Thanks for the Help!!!

2007-11-06 12:32:02 · 1 answers · asked by Anonymous in Chemistry

find all of the critical numbers for f(x)=(x+7)^2/3 - 2x^2/3 . determine the intervals whee f is increasing and those where it is decreasing . determine all local extrema.

2007-11-06 12:31:55 · 4 answers · asked by Talal B 1 in Mathematics

do you agreee or disagree ... and why??

feel free to write alot

2007-11-06 12:30:41 · 8 answers · asked by Carly S 1 in Biology

2007-11-06 12:30:38 · 1 answers · asked by Anonymous in Physics

2007-11-06 12:29:11 · 17 answers · asked by Anonymous in Zoology

2007-11-06 12:27:57 · 2 answers · asked by diddlyidledave 1 in Physics

what are some physical features that help pandas survive?

2007-11-06 12:25:05 · 3 answers · asked by kit kat 1 in Zoology

2007-11-06 12:24:47 · 2 answers · asked by snicky 101 2 in Geography

Here is the question (it deals with maximizing revenue):

According to Mr. Hass, the number of cell phone subscribers in North America was 150 million as of the year 2000 and he claims that the number of subscribers has been increasing at a rate of 42 million per year. He also claims the average annual revenue (to cell phone service providers) per subscriber was $330 in 2000 , but has been decreasing at a continuous rate of 5% per year since then. If this is all true, determine the year when cell phone revenue is expected to peak.

2007-11-06 12:23:40 · 1 answers · asked by Dirk M 2 in Mathematics

632.8 nm v1=?

503 nm v2=?

0.052 nm v3=?

2007-11-06 12:23:14 · 2 answers · asked by Anonymous in Chemistry

Use the properties of angle measures to find the measure of each marked angle.

Find the measure of the marked angles.

a = (4x + 6)°
b = (3x + 24)°

Sorry, I don't have a picture, but the angles are directly across from each other.

2007-11-06 12:19:56 · 6 answers · asked by Brick Top 1 in Mathematics

The height y (in feet) of a ball thrown by a child is y = -1/14x^2 + 4x + 5 where x is the horizonal distance in feet from the point at which the ball is thrown.
1.) What is the maximum height of the ball?
2.) How far from the child does the ball strike the ground?

2007-11-06 12:18:35 · 4 answers · asked by Anonymous in Mathematics

This is a problem that I need help with. I know how to do it but the problem is that I have to solve this problem without a calculator.

There is a boy who is standing at the center of a circular field that had a radius of 135 feet. He walks due north halfway to the circle. He then turns and walks due east half way to the circle. He turns again and walks due south half way to the circle. Finally he turns and walks due west half way to the circle. When he stops, how many feet is the boy from the center of the circle? Round the answer to the nearest foot.

2007-11-06 12:17:36 · 2 answers · asked by someone1254 2 in Mathematics

soorry guys again with the same-little different question.. but iaccidentally missed it , too. so please guys help me get the angle and the azimuth . it is perfectly alright if it's another time(but casual one) not like at 3 in the moring u know..
my location is southwest houston like at 29 degrees or something..........please guys help me .............

2007-11-06 12:15:52 · 2 answers · asked by chakli 1 in Astronomy & Space

a. It is broken down as a new DNA strand forms.
?% b. It serves as the template for the creation of two complete sets of DNA.
c. It is incorporated into the new DNA strand.
d. It is converted to RNA.




I had picked B. on my test but I got it wrong :(, which would be the right answer?

2007-11-06 12:15:01 · 4 answers · asked by J 2 in Biology

2007-11-06 12:14:44 · 3 answers · asked by Ustadji 1 in Mathematics

x is 15 more than four times y. How would you write that as an equation?

2007-11-06 12:14:25 · 6 answers · asked by Nikki B 3 in Mathematics

Can you please tell me if my answer to this math question is right?

My answer:
8.4 and 8.4 because, when added, they equal 16.8.
Of all the numbers that can be added together to equal 16.8 and then multiplyed together, 8.4 times 8.4 will give the greatest product - 70.56

2007-11-06 12:13:54 · 9 answers · asked by Anonymous in Mathematics

Today it did by me! ( I live 30min from buffalo)

Today was a big day for buffalo we got snow. we always get snow. anyways did it snow by you? and where do you live? xox

2007-11-06 12:12:41 · 48 answers · asked by Anonymous in Weather

2007-11-06 12:12:35 · 3 answers · asked by cnb questions 1 in Weather

I will give best answer whoever can balance this equation first

Cu + HNO3 ---> Cu(NO3)2 + NO + H20

2007-11-06 12:11:51 · 2 answers · asked by Anonymous in Chemistry

I'm helping my best friend with her science homework. We need help. I really need some info on brain cells and any other info related to the question. It's for the Research Report. Plz help us. INFO NEEDED ASAP! :(

2007-11-06 12:11:23 · 1 answers · asked by Anonymous in Chemistry

i am trying to design a wind genorator one piece at a time i am currently working on the altinator i need it to produce enough power to run my 500 watt 12v dc ac inverter at probably full load when used. i will be using 1 deep cycle battery to stabilize the power and eventualy 2 or 3 batteries and 700 watt inverter. let me know if you need more info.

2007-11-06 12:10:19 · 1 answers · asked by Q6750 1 in Other - Science

Before answering this question...go to the following link and read this story about the rovers. (Please)

http://news.yahoo.com/s/space/20071106/sc_space/marsroversscientificstayingpower

The rovers were only expected to last 90 days and now they have been working for over 3.5 years. My question is this: How do some people have the guts to complain about wasted taxpayer dollars for the space programs when many man made things like this give us waaay more of a return on investment than expected? How do they justify the complaining? (This is an actual question.)

2007-11-06 12:10:02 · 6 answers · asked by ? 4 in Astronomy & Space

2007-11-06 12:10:01 · 3 answers · asked by Anonymous in Astronomy & Space

Like in an atom bomb how do they split the atom?

2007-11-06 12:08:50 · 4 answers · asked by cody 2 in Physics

There are so many working windmills around here used in pastures for watering livestock. I know this is not the same, but I would just like to know the basics, is it possible to set up something for a single farm?
Thanks for your time.

2007-11-06 12:06:26 · 9 answers · asked by Ayla B 4 in Agriculture

was there a expectation factor since you knew you were going into a supposed haunted house or places on the tour?

2007-11-06 12:06:25 · 5 answers · asked by Father Ted 5 in Other - Alternative

where can I get used welding equipment? Its way too expensive new.

2007-11-06 12:01:12 · 3 answers · asked by sickytwisted 3 in Engineering

2007-11-06 11:56:01 · 3 answers · asked by the boy from tortuga 4 in Astronomy & Space