Science & Mathematics - 18 December 2006

this is a bit of a toughie, but i will give you all a clue, uk coal miners have these 2 chemicals inside a "self rescuer" which is worn underground during a fire. sorry but i dont know if usa miners have the same equipment.

2006-12-18 12:05:08 · 7 answers · asked by jardon 3 in Chemistry

math portfolio for IB. need help! characteristics of the wave form of the graph y = sinx and similar graphs such as y = 2sinx and y = 1/3sinx

2006-12-18 12:04:28 · 4 answers · asked by amza 2 in Mathematics

Like what time you would like to go to bed....Thoughts of things to be.....Tom Science 4

2006-12-18 12:04:12 · 1 answers · asked by Anonymous in Biology

http://img186.imageshack.us/img186/2781/symhu0.jpg

I forgot... is it directly related to?

2006-12-18 12:01:11 · 12 answers · asked by Anonymous in Physics

I think it's the embryonic stem cell, but I'm not sure. Please provide a link or an explanation.

2006-12-18 12:00:56 · 3 answers · asked by thegreenmooseofdoom 2 in Biology

2006-12-18 11:59:23 · 4 answers · asked by michou 1 in Mathematics

Four times the sum of three consecutive integers is 48.

What are the integers???

2006-12-18 11:57:35 · 13 answers · asked by Anonymous in Mathematics

2006-12-18 11:56:28 · 10 answers · asked by Anonymous in Other - Science

2006-12-18 11:55:54 · 2 answers · asked by Maiya F 1 in Zoology

2006-12-18 11:55:14 · 3 answers · asked by newyorkgirl 2 in Chemistry

2006-12-18 11:54:41 · 3 answers · asked by root1963 1 in Other - Science

2006-12-18 11:53:46 · 2 answers · asked by ra s 1 in Biology

Things like who created it? when? ...

2006-12-18 11:52:12 · 2 answers · asked by dolphinlover534 2 in Chemistry

2 9 4
7 5 3
6 1 8

The above shows a magic square which I'm sure most of you are familiar with. It uses the numbers 1 to 9 in a 3x3 grid in a manner that the three rows and the three columns together with the two diagonals. each add up to 15.

Now can you place these same numbers in such a way to form an anti-magic square so that the total in every direction is different? And if you're feeling very clever, can you create this anti-magic square in such a way that NONE of the totals is 15?

2006-12-18 11:50:29 · 4 answers · asked by brainyandy 6 in Mathematics

1 - He
2 - Osubscript2
3 - CHsubscript4
4 - NHsubscript3

2006-12-18 11:50:19 · 3 answers · asked by Lily 1 in Chemistry

2006-12-18 11:50:18 · 14 answers · asked by Anonymous in Other - Science

2006-12-18 11:49:46 · 8 answers · asked by eileen g 1 in Mathematics

here is the problem with distributive properties.

Find the missing numbers
_____(3.8) = 9(4) - 9(____)

2006-12-18 11:49:16 · 5 answers · asked by Mirage 1 in Mathematics

In a 1-cubic foot container, how many cubic feet of compressed air would the container hold at 100 psi (pounds per square inch of pressure)?

If anyone can tell me the answer, or can provide me with a formula to figure this out, I would really appreciate it! Thanks!

2006-12-18 11:48:53 · 2 answers · asked by nursemarie 3 in Mathematics

2006-12-18 11:46:58 · 10 answers · asked by batista~rox 1 in Geography

2006-12-18 11:42:40 · 6 answers · asked by hulagirl 1 in Biology

2006-12-18 11:42:38 · 3 answers · asked by Shawn R 1 in Biology

I hope someone can help me do this:
Find a model for every phrase where the phrase is not true:
(1) Ax Ey Pxy → Ey Ax Pxy
(2) Ax (Qx or Rx) → (Ax Qx or Ax Rx)
(3) (Ax Sx → Ax Tx) → Ax (Sx → Tx)

(A = for all, E = there exists)

2006-12-18 11:42:21 · 1 answers · asked by laurentvanwinckel 2 in Mathematics

im doin a areport on fossils what type of fosils should i do {i know nothin on fossils}

2006-12-18 11:42:07 · 19 answers · asked by shayna m 1 in Zoology

2006-12-18 11:42:04 · 5 answers · asked by pjlangstaff 1 in Zoology

I got 1/x? i don't think thats right is it
?

2006-12-18 11:40:53 · 3 answers · asked by math55 1 in Mathematics

1.vertex: (4, -36)
point: (0, -20)

2. Vertex: (3, -1)
point: (2,0)

3. Vertex: (-2, 2)
POint: (-1, 3)

i will greatly appreciate it

2006-12-18 11:40:45 · 3 answers · asked by lshaw1990 1 in Mathematics

2006-12-18 11:38:48 · 12 answers · asked by Matthew A 2 in Astronomy & Space

2006-12-18 11:38:28 · 3 answers · asked by adrawy b 1 in Geography

give it for period 4, group 17 element.
i know electron configurations, but im not sure on valence configurations.

2006-12-18 11:37:04 · 2 answers · asked by Stephanie 3 in Chemistry