Science & Mathematics - 21 November 2006

You wont get the best answer if u dont help me with all of them!
I'm writing them out how they r in the book. You DO TOO!

5.The lenth of a rectangle is 4 centimeters (cm) less than three times the width. The perimeter is 64 sm.
Find the width and length

6.The sum of three numbers is 64. The second number is 3 more than the first The third number is 11 less rhan twice the first. Find the numbers

10. 8x - (6x - 4) = 10

13. Two consectutivewhole numbers total 17 Find the larger

14. Two consectutive odd numbers total -20. Find the smaller

15.One number is 4 less than 3 times another. Their sum is -16
Find the smaller

16.Two consectuvie odd numbers total 32. Find the smaller.

2006-11-21 09:17:35 · 10 answers · asked by Guy Who Brushes His Teeth* 6 in Mathematics

The following reaction has Kp = 109 atm-1 at 258°C.
2 NO(g) + Br2(g) 2 NOBr(g)

If the equilibrium partial pressure of Br2 is 0.0108 atm and the equilibrium partial pressure of NOBr is 0.0717 atm, calculate the partial pressure of NO at equilibrium.

2006-11-21 09:17:30 · 1 answers · asked by smile 1 in Chemistry

Specifically, between September and November.

2006-11-21 09:17:07 · 2 answers · asked by bicyclekick73 1 in Astronomy & Space

Why is it possible that are are millions of pure substance, even though there are only about 100 different elements?

2006-11-21 09:16:29 · 2 answers · asked by Anonymous in Chemistry

I had one when i was six and i'm doing fine now. I have childhood onset cerebral adrenoleukodystrophy. In fact I would say I'm a prettty strange case. I should be loosing brain cells , but i'm not, lucky me. I had mine done in Minnesota, and I live in Wisconson. I just want to know how it went for you or them

2006-11-21 09:16:24 · 4 answers · asked by Anonymous in Medicine

What is the molecular weight of Chromium?

2006-11-21 09:15:30 · 3 answers · asked by Ballerina 1 in Chemistry

I had a test today and this was one of the questions. I was gonna solve it putting it in y=mx+b and then graphing points, but when i asked my professor, he said i needed to find the boundary first, WHAT?

2006-11-21 09:15:24 · 3 answers · asked by woah 2 in Mathematics

No web site, to my knowledge, explains the formation of natural carbonated water. Apparently it has something to do with calcite or similar rocks, and a change in pressure (which brings out the bubbles). Beyond that, I can't find any details, such as specific springs and how they work, or how much CO2 you can actually get naturally in water.

2006-11-21 09:15:00 · 1 answers · asked by Anonymous in Earth Sciences & Geology

2006-11-21 09:09:47 · 2 answers · asked by cheerforchris 1 in Botany

i'm a high school student in the Phils. we have this investigatory project due in three weeks and unfortunately, our first topic which we have been studying for 5 months now cannot be tested because the equipment is not available here in our country. so our group thought of a new topic and that is to find out a coating which can be applied to cellphones which can lessen the persons exposure to UV coming from cellphones.can anyone suggest and give me background on this matter. i was thinking if it would be possible if you guys give a possible liquid UV curable substance for our study( maybe a substance which is not used for this purpose but has potential to be used as such. or any other liquid substance which has potential. the substance must by the way be UV curable in the first place)

2006-11-21 09:08:45 · 3 answers · asked by three_sixty 2 in Physics

and three of the lamps light bulbs all burnt out at the same time today. do you believe it was a supernautral, or just a fluke? and who would sht their pants if this happened to them, im not to sure how i feel about it.

2006-11-21 09:07:48 · 8 answers · asked by Anonymous in Other - Science

I keep getting both of these wrong and would appreciate direction and answers.

1. Find the angle between the following pair of vectors:
u= -i+4j, v=3i-4j

2.Write the following vector in the form ai+bj:Direction angle 240 degrees, magnitude 10

Many thanks!

2006-11-21 09:05:44 · 2 answers · asked by mdetaos 3 in Mathematics

2006-11-21 09:02:38 · 8 answers · asked by BeatyIsInTheEyesOfTheBeholder 1 in Chemistry

in relation to streams, rivers, lakes and oceans

2006-11-21 09:02:15 · 1 answers · asked by ghuddles1 2 in Earth Sciences & Geology

What is a chemical reaction (besides rusting) that occurs around us in the world around?

Preferably a simple chemical reaction.

2006-11-21 09:01:41 · 5 answers · asked by Anonymous in Chemistry

Okay, I just took a math test. And I think I got 1 2/3 into a percentage wrong. I put 134%. I actually know that is wrong because I had no idea how to do that. So what would be the correct answer?

2006-11-21 08:59:27 · 12 answers · asked by Addicted To Abercrombie & Fitch 2 in Mathematics

Do we actually have an impact or do we just naturally improve on certain things? (evolution)

2006-11-21 08:58:58 · 5 answers · asked by Anonymous in Biology

encountered ?

2006-11-21 08:58:28 · 10 answers · asked by Anonymous in Zoology

Its really weird. Girls where make-up and stuff like that

2006-11-21 08:58:11 · 6 answers · asked by Joana T 1 in Other - Science

the mean is 4626 and error is 591. Whats the confidence interval? Show me the work. I dunno

2006-11-21 08:58:00 · 2 answers · asked by Marcus Aldrige 1 in Mathematics

Is sand, washing soda, and baking soda soluble in water? Thanks.

2006-11-21 08:57:28 · 3 answers · asked by Ray 4 in Chemistry

2006-11-21 08:56:05 · 3 answers · asked by sosnafm123 1 in Astronomy & Space

2006-11-21 08:51:31 · 9 answers · asked by apple_bottomz_28 2 in Mathematics

How can a black hole suck in light if gravity has no effect on light since its just energy? And is there such things as a white hole?

2006-11-21 08:50:51 · 14 answers · asked by bob 2 in Astronomy & Space

2006-11-21 08:50:30 · 3 answers · asked by leeanne 1 in Physics

2006-11-21 08:49:44 · 17 answers · asked by Anonymous in Geography

2006-11-21 08:49:17 · 5 answers · asked by SHERINA 2 in Biology

2006-11-21 08:47:42 · 5 answers · asked by mewoow 1 in Earth Sciences & Geology

2006-11-21 08:46:58 · 14 answers · asked by Anonymous in Mathematics

A bubble of gas (0.115 cm^3) formed at the bottom of a 12.7 cm deep container of mercury. The temperature is 33 degrees C at the bottom and 33.6 degrees C at the surface, so what is the volume of the bubble just beneath the surface of the mercury in units of cm^3?.

Acceleration of gravity is 9.8 m/s^2. Assume that the surface is at atmospheric pressure 101300 Pa. Use 13600 kg/m^3 as the density of the mercury.

2006-11-21 08:46:51 · 2 answers · asked by Anonymous in Physics