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Science & Mathematics - 17 December 2006

[Selected]: All categories Science & Mathematics

Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology

p.s. My teacher says they cause global warming.

2006-12-17 07:56:12 · 9 answers · asked by Anonymous in Zoology

2006-12-17 07:50:59 · 2 answers · asked by camera master 1 in Chemistry

2006-12-17 07:50:37 · 10 answers · asked by JR 1 in Physics

a 3 meter ladder stands against a high wall.The foot of the ladder moves outward at a speed of .1 m/s when the foot is 2 meter from the wall.how fast is the area formed by the wall,ground,and ladder changing at this time?

2006-12-17 07:46:53 · 3 answers · asked by Blesson 2 in Mathematics

"Alcohol, Water, or... Copper?"

2006-12-17 07:45:31 · 4 answers · asked by Anonymous in Chemistry

2006-12-17 07:44:19 · 6 answers · asked by messanger 1 in Chemistry

2006-12-17 07:43:12 · 4 answers · asked by JetAlone 2 in Earth Sciences & Geology

I have a project to do for astronomy class and we have to pick a planet and make a brochure about it to make people want to go there and visit can you tell me some stuff that I can put down you can do on venus even though it's not for real. and we cannot change the conditon of the planet.

2006-12-17 07:42:01 · 4 answers · asked by MMN 4 in Astronomy & Space

density

2006-12-17 07:42:01 · 3 answers · asked by tiggersweetie07 1 in Physics

0

how much water does a n lpg ( propane) heater produce. On a cold day everything is wringing wet with condensation is the answer a heat exchanger with a vented flue

2006-12-17 07:41:36 · 2 answers · asked by Anonymous in Engineering

minimum.

2006-12-17 07:40:31 · 6 answers · asked by jensolau 1 in Mathematics

1)x+y=5
x-y+7
2)x-2y=8
-x+3y+-5
3)x-4y=14
-x+3y=-11
4)2x-y=-3
-5x+y=9
5)3x+y=-3
x-4y+11
6)-2x+3y=14
-3x+4y=9
7)2x-3y=-16
x+3y=10

2006-12-17 07:39:18 · 12 answers · asked by sexypimpett 1 in Mathematics

what is a really cool name that we can give to our moon and why? it's for my astronomy class.

2006-12-17 07:37:28 · 8 answers · asked by MMN 4 in Astronomy & Space

3. 10x - 6 = 5x^2

4. x + 2x^2 + 1 = -1

5. 2x^2 + x = 10

6. 2x + 1 = 2x^2


can anyone answer any of these?? my family is stumped as so am i

2006-12-17 07:37:08 · 5 answers · asked by Anonymous in Mathematics

When you leave the Earths atmosphere and enter space, is there a definitive line between the atmosphere and space, or do you pass through them gradually. Sorry if this seems a bit vague but i'm not sure how to word it.

2006-12-17 07:36:49 · 6 answers · asked by loonball20002000 2 in Astronomy & Space

I have just bought an digital pressure gauge (Digitron 2083 P) for some medical research. in a journal that i will be writing to , i need to tell them about the accuracy and precision of the instrument. The leaflet tells me this: 0.3%rdg +0.3%fs + 1 digit
unfortunately i do not understand what this means. i need to explain it to a medical community but i have to understand it first !

2006-12-17 07:35:16 · 2 answers · asked by Nirmala 4 in Engineering

C6H9N ---> C6H10O

what do i use for a solvent for this equation?
or at least, can anyone tell me if i need a protic, aprotic, or nonpolar solvent?

2006-12-17 07:35:05 · 1 answers · asked by kristin 3 in Chemistry

Calculate the moles for 32.0 grams of SO2

Calculate the mass in grams of 0.602 moles of Ca(NO3)2 . 3H20

Calculate the moles of 1.50x10 to the 23rd molecules of NH3

Calculate the mass of 2.41 x 10 to the 24th molecules of H2O

Calculate the number of molecules for 68.0 grams of H2S

Calculate the percent of composition of HCN

THANKS SO MUCH!!

2006-12-17 07:34:00 · 1 answers · asked by not857 1 in Chemistry

2006-12-17 07:32:32 · 7 answers · asked by Anonymous in Weather

write the equation in standard form using INTEGERS.
1) y=2/3x+7
2) y=5/3x-11

2006-12-17 07:31:16 · 3 answers · asked by Anonymous in Mathematics

what is the slant asymptote of (2x^2-5x+5)/(x-2)

2006-12-17 07:29:29 · 1 answers · asked by Anonymous in Mathematics

My son is trying to find out the properties of various metals and other materials.

2006-12-17 07:27:03 · 4 answers · asked by panda_carr 1 in Engineering

2006-12-17 07:24:01 · 7 answers · asked by youssefmurad 1 in Physics

2006-12-17 07:22:15 · 3 answers · asked by A B B A 2 in Earth Sciences & Geology

okay,
1. write out the chemical equation in words for each of the reaction which gave you precipitate:
( in the lab, I got this equations that gave me ppt)
- HgCl2{Mercury II Chloride} w/ No2(Co3) {Sodium Carbonate}
- No2(Co3) {Sodium Carbonate} w/ Pb(No3)2 {Lead II nitrate)
- No2(Co3) {Sodium Carbonate} w/ KI {Potassium iodide}
- Pb(No3)2 {Lead II nitrate) w/ Na2(SO4){Sodium Sulfate)
-BaCl2 {Barium Cloride} w/ Na2(SO4){Sodium Sulfate)
-CuCl2 {Copper II chloride} w/ No2(Co3) {Sodium Carbonate}
- CuCl2 {Copper II chloride} w/ KI {Potassium iodide}

there are a lot more, but those are that I dont understand

also what are chemical "word" and how do I write the corresponding chemical equations using the correct chemical for each below chemical "word"?

one last thing, what are cloudy precipitate?

2006-12-17 07:20:17 · 2 answers · asked by Anonymous in Chemistry

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