Science & Mathematics - 17 December 2007

NH4+ + CN- --> NH3 + HCN
are respectively, ____.
1. NH4+ and NH3
2. NH4+ and HCN
3. NH3 and CN-
4. CN- and HCN
5. NH4+ and CN-

2007-12-17 11:24:52 · 1 answers · asked by Anonymous in Chemistry

answers please thanx

2007-12-17 11:24:29 · 8 answers · asked by Anonymous in Biology

Im doing a report for one of my classes and it asks for one physical response to its environment. Can anyone at all explain this question to me?

-Thanks

2007-12-17 11:23:38 · 5 answers · asked by Michelle 3 in Zoology

2007-12-17 11:21:27 · 1 answers · asked by Cool M 1 in Biology

find the point of intersection of two of the perpendicular bisectors algebraically

equations: y=4x-1 and y=-1/2x-1/2
tell how u did it please =D

2007-12-17 11:19:16 · 2 answers · asked by Krn Pwner 1 in Mathematics

seems to me after years of watching these events . It seems everytime the Shuttle goes into Space the more the weather patterns tend to change the more

and when it was grounded awhile back the patterns mellowed out and was less changing........
what do you all think of such a possiablity ?

2007-12-17 11:19:13 · 8 answers · asked by hghostinme 6 in Astronomy & Space

2007-12-17 11:18:46 · 5 answers · asked by chica 2 in Astronomy & Space

1. CN-
2. HS-
3. HC2H3o
4. H2CO3
5. HF

2007-12-17 11:18:23 · 1 answers · asked by Anonymous in Chemistry

We found it inside the garage, behind one of those painters tarps. We have it in a jar, just in case its poisonous.
What kind is it? And IS IT POISONOUS!?!?!?!

http://i207.photobucket.com/albums/bb226/moosexluver/1216070826.jpg

2007-12-17 11:18:11 · 7 answers · asked by Anonymous in Zoology

A crate containing machine parts sits unrestrained on the back of a flatbed truck traveling along a straight road at a speed of 80 km/hr. The driver applies a constant breaking force and comes to a stop in a distance of 22 m. What is the minimum coefficient of static friction between the crate and the truck bed if the crate is not to slide forward?

2007-12-17 11:16:42 · 1 answers · asked by chewd.pencils 2 in Physics

2007-12-17 11:16:22 · 2 answers · asked by softballbabi32 1 in Earth Sciences & Geology

2007-12-17 11:15:39 · 2 answers · asked by m.reviewer 1 in Zoology

answer these questions in a few words.

2007-12-17 11:11:43 · 1 answers · asked by jessejames2nice 1 in Earth Sciences & Geology

can ne one help me list down all the factors in a cheetah;s niche.
i thought of a lot of them but i kno there's a lot more so can you help me? :D pleaz.

2007-12-17 11:11:31 · 1 answers · asked by APNA 3 in Zoology

They are NOISY

2007-12-17 11:11:01 · 13 answers · asked by Alleycat 1 in Zoology

2007-12-17 11:10:36 · 1 answers · asked by Marlena W. 1 in Earth Sciences & Geology

I need to use the full limit definition of the derivative to find the derivative of this function:

f(x) = 2x + 3

Please SHOW WORK!!!

2007-12-17 11:09:22 · 2 answers · asked by Anonymous in Mathematics

you have all the power of the universe to keep 3 veggies. do you go with your personal favorites or what's better for mankind?

2007-12-17 11:07:51 · 7 answers · asked by sredmoe 2 in Earth Sciences & Geology

2007-12-17 11:07:44 · 2 answers · asked by Anonymous in Geography

Sally wants to cut a piece of ribbon 8 1/2 yards lond into 1/4 yard pieces. How many pieces will sally have when she finishes?

2007-12-17 11:06:44 · 4 answers · asked by brownsuagr569 2 in Mathematics

How do I find the derivative of this? Please show your work in answer, I need to understand it:

g(x) = (2x^2 + 4x - 3) ( 5x^3 + 2x + 2)

2007-12-17 11:05:20 · 7 answers · asked by p_kubhakin1980 1 in Mathematics

2007-12-17 11:04:27 · 1 answers · asked by esimaje n 1 in Earth Sciences & Geology

plate tectonics

2007-12-17 11:03:10 · 7 answers · asked by Anonymous in Earth Sciences & Geology

i need to know for a math test tomorrow and i don't have study material!!! help!!!

2007-12-17 11:02:47 · 7 answers · asked by Zoe Z 1 in Mathematics

(sinx+cosx)^2-1=sin2x

2007-12-17 11:02:37 · 1 answers · asked by Someone E 1 in Mathematics

2007-12-17 11:00:24 · 3 answers · asked by cedarboy94 1 in Biology

L = √kp (both k and p are under square root)
If this formula represents the relationship between a plane's length L and the pounds P its wings can lift, where k is a constant of proportionality calculated for a plane. If a plane must support 300,000 pounds and its wings are 180 feet, what is the value of k?

2007-12-17 11:00:12 · 2 answers · asked by calleighismygirl 1 in Mathematics

y = (1 - 2^x) / (1 + 2^x)

i only found one at y = -1 but there's suppose to be one at y = 1 as well according to the answer. however if i simply divide top and bottom by 2^x as usually, i can only get the -1 part. can someone show me

2007-12-17 10:59:49 · 3 answers · asked by wendywei85 3 in Mathematics

2007-12-17 10:58:47 · 31 answers · asked by niners1800 2 in Weather

2007-12-17 10:58:47 · 16 answers · asked by Vangie Torres 1 in Geography