Science & Mathematics - 30 January 2007

My oldest daughter is doing a science project on the effects of sodium cyanide on bronze and other metal, she only needs a small amount to show the effect but I can not find this stuff anywhere. I have checked jewlers and craft stores to no avail.

2007-01-30 09:37:02 · 2 answers · asked by flawolfchild 2 in Chemistry

y=x-4 4x=y=26 the whole concept is to solve for x and y this is algebra can some one help me please!!!!!!!!!!!!!!!!!!!!!!!!

2007-01-30 09:35:52 · 5 answers · asked by pretty_girl_ke 1 in Mathematics

2007-01-30 09:35:29 · 3 answers · asked by US 3 1 in Zoology

okay it's a tricky one, what are the variables t, r, and s??

t+r+s=20
r+t+3
t+5r+10s+129


Thanks!

2007-01-30 09:34:10 · 2 answers · asked by K L 3 in Mathematics

am doing a graduation research project

2007-01-30 09:33:49 · 27 answers · asked by Anonymous in Medicine

i have looked in all the direction maps but not being computer conversant cant work it out need answers before the morning help

2007-01-30 09:33:03 · 1 answers · asked by stafford7176 2 in Geography

This question has been on my mind for a long time and cant figure it out.

2007-01-30 09:32:53 · 4 answers · asked by Mike 4 in Physics

2007-01-30 09:32:26 · 2 answers · asked by GGbaby13 2 in Astronomy & Space

2007-01-30 09:32:22 · 2 answers · asked by danity0414 2 in Chemistry

2007-01-30 09:31:45 · 3 answers · asked by goring 6 in Astronomy & Space

On Thursday, the Eiffel Tower will shut of its lights for five minutes.

The time it will be shut off is 1855 GMT.
What time is that in Central Daylight Time in the United State?
Thank you.

2007-01-30 09:31:30 · 5 answers · asked by Robert E 2 in Geography

2007-01-30 09:29:13 · 2 answers · asked by E 1 in Mathematics

I need to know for a test!

2007-01-30 09:27:16 · 16 answers · asked by ♥star.light 2 in Chemistry

The hypotenuse of a certain right triangle is twice as long as the shortest side, and the length of the third side is 15m. Find the length of the shortest side.

2007-01-30 09:26:47 · 9 answers · asked by Jake B 2 in Mathematics

If you know anything about this drug let me know. I just got it prescribed because its suppose to help make me want to get out of my house and be less depressed. They doctor started me out on 10mg, and she said that she would increase the dosage if there were no serious side effects, so far i havent had none. I dont feel it working at all, but i was going through forums and heard it can quite sometime. How long does it usually take? Did it work for you?

2007-01-30 09:26:26 · 9 answers · asked by Anonymous in Medicine

2007-01-30 09:25:28 · 3 answers · asked by Macaulay G 1 in Biology

If you have 1 L of ethanol and you put in in a room that is 3 m long, 2.5 m wide, and 2.5 meters high, will all of the alcohol evaporate? And, if some liquid remains, how much will there be?

I already found that the vapor pressure of ethanol is 59mm Hg at 25 degrees C, and at this temperature, the density of ethanol is .785 g/cm^3.

2007-01-30 09:25:00 · 1 answers · asked by Christie 3 in Chemistry

2007-01-30 09:24:46 · 1 answers · asked by goring 6 in Astronomy & Space

Go ahead and do your own searches. I just read it somewhere online. Some of the most beautiful objects i have ever seen have been in Hubble images.

2007-01-30 09:24:38 · 4 answers · asked by disco legend zeke 4 in Astronomy & Space

Standard Form equation for circle: (x-h)^2 + (y-k)^2 =r^2
where center = (h,k) and r =radius

Find the equation of a circle that has a radius of 3 and goes through (2,6) and (-3,8).

If you guys can help me out, that would be great, because this one really stumped me on how to find the ordered pair of the center of the circle.

2007-01-30 09:24:34 · 2 answers · asked by jenny 6 in Mathematics

My problem is -2x^2+5x^2 Does this equal 3x^4? I'm wondering, do you just add the exponents?

2007-01-30 09:24:14 · 8 answers · asked by a-jay 2 in Mathematics

Anything that would allow me to understand and chart their relative growth rates would be excellent. Thnx

2007-01-30 09:22:02 · 1 answers · asked by leigh_williams2 1 in Zoology

2007-01-30 09:21:05 · 3 answers · asked by goring 6 in Astronomy & Space

Most animals have one don't they?

2007-01-30 09:20:57 · 15 answers · asked by wave 5 in Biology

2007-01-30 09:20:34 · 5 answers · asked by cathy r 1 in Physics

2007-01-30 09:19:22 · 6 answers · asked by goring 6 in Astronomy & Space

2007-01-30 09:18:33 · 3 answers · asked by E 1 in Mathematics

How much of human waste is it still in our body, even when we already went to the toiler I read it somewhere that there is a lot more "waste" in us then we know...
how long would it take to ALL clean up?

2007-01-30 09:18:25 · 5 answers · asked by Anonymous in Biology

I have heard that Florida is not part of the South is in the Southern States. Tampons here say it's its own entity.

2007-01-30 09:17:58 · 10 answers · asked by Cuddly Lez 6 in Geography

2007-01-30 09:17:05 · 12 answers · asked by andrew m 1 in Geography