Science & Mathematics - 8 November 2007

Hi,

What would happen if chlorine water was added to an aqueous solution of sodium chloride? Would there be no reaction?

Cl2 + NaCl --> ?

Thanks!

2007-11-08 02:35:19 · 3 answers · asked by Anonymous in Chemistry

I did the next step by differentiating and got 3sec^2(3x)/5sec^2(5x). How do i go further to prove it? i wish i could just say the answer was 3/5.......

2007-11-08 02:33:41 · 3 answers · asked by desigal 5 in Mathematics

show v1 and v3 are linearly dependent.

2007-11-08 02:32:59 · 1 answers · asked by Vince 1 in Mathematics

2007-11-08 02:28:11 · 12 answers · asked by Bubsoup 2 in Geography

v^2=u^2 + 2as

make e the subject

v= sq..rt 2(e-mgh)/m

2007-11-08 02:26:44 · 1 answers · asked by master 2 in Mathematics

I have a vague memory of reading somewhere that UK soil is not part of the natural geology but had been blown in from ????

Anybody know anything about this? I have done the google search and have not found anything, any website links would be great too.

2007-11-08 02:24:43 · 2 answers · asked by Anonymous in Earth Sciences & Geology

I was given two pills to take away tooth ache pain and they are enscribed with "west-ward 473" on them. Do you know if they are safe?

2007-11-08 02:23:45 · 2 answers · asked by Anonymous in Medicine

its a Triangle cut in half I think?



~AC = 16, ~BC = 24 and ~AB =20

~CD bisects point A and point B

Point D is between Point A and Point B

solve for ~AD and ~DB

Hint: AD = x
DB = 20 -x

(i hate math)

2007-11-08 02:16:45 · 7 answers · asked by Anonymous in Mathematics

12. A regular octagon has a perimeter of 56 feet. Find the length of each side.
The length of a side is:
A. 9.3 ft
B. 7 ft
C. 14 ft
D. 3.5 ft

19. Find the number of sides of a regular polygon if the sum of the measures of the interior angles is .
The number of sides is:
A. 9
B. 7
C. 5
D. 3

2007-11-08 02:12:27 · 3 answers · asked by Anonymous in Mathematics

I am trying to find out what truth conspiracy theorists are saying, or are they just trying to get attention? I'm open to the idea that is was a hoax. But I'd like to see evidence. I was looking for something similiar to this:
Arguments for landing:
1)creating a vacuum like the one on the moon is not possible
2) second argument

Argument for hoax:
1)no wind on moon, there is wind in videos
2) second argument

If you cannot do that, that is fine too. Just give me an opinion, I suppose. Thanks a lot.

2007-11-08 02:11:26 · 17 answers · asked by the_wall84 2 in Astronomy & Space

6. Find the number of sides of a regular polygon if each interior angle measures .
The number of sides is:
A. 20
B. 16
C. 24
D. 18
7. The sum of the measures of the exterior angles of a regular hexagon is:

A. 720°
B. 1440°
C. 1080°
D. 360°
8. Use the following polyhedron to answer the question.

The number of vertices is:
A. 12
B. 10
C. 8
D. 6
9. The side of a regular pentagon is 12 cm. Find the perimeter.
The perimeter is:
A. 60 cm
B. 72 cm
C. 30 cm
D. 36 cm
10. Use the following polyhedron to answer the question.

The number of faces is:
A. 5
B. 4
C. 3
D. 6
11. The measure of each interior angle of a regular decagon is:

A. 144°
B. 36°
C. 108°
D. 150°

2007-11-08 02:09:19 · 3 answers · asked by Anonymous in Mathematics

Given that m * l = m²-lm
Evaluate 5 * 3

Solve for g given that g * 4 = -3

2007-11-08 02:08:24 · 1 answers · asked by wendi_just4u 2 in Mathematics

Be as specific as possible please

2007-11-08 02:05:21 · 5 answers · asked by J Dog 2 in Weather

A 0.30-kg bullet is fired vertically at 200 m/s into a .15-kg baseball that is initially at rest. Please show work using the conservation of momentum and conservation of energy.

2007-11-08 01:58:42 · 1 answers · asked by chickenboy 1 in Physics

x^2 + x + sqrt[x^2 + x] - 2 = 0


I am just plain confused about eliminating the square root, etc.

2007-11-08 01:58:26 · 5 answers · asked by Anonymous in Mathematics

2007-11-08 01:54:05 · 10 answers · asked by GUNTZ 2 in Zoology

Bonus Question

find or prove (incorrect or correct) or find the relation b/w i=1/i

2007-11-08 01:53:51 · 3 answers · asked by (ƸӜƷ) 1 in Mathematics

can you make x the subject of the following expressions?

t = 7 - 4x

t = x + 1 / x - 1

y = x^2 - 3 (x squared)


Thanks in advance

2007-11-08 01:48:52 · 3 answers · asked by mg© - anti VT™ MG AM© Fundi4Life 6 in Mathematics

Does anyone know of zoos or conservation areas in which I may be able to help care for Otters? It does not matter where.

2007-11-08 01:48:48 · 3 answers · asked by treehuggingbeastboy 3 in Zoology

plese help get 10 points

2007-11-08 01:45:59 · 4 answers · asked by Anonymous in Biology

(a) (2 ln y +y^ 2/ x ^2) dx +( x^2 / y - 2 y ln x )

(b) 2ty / t^2 +1 - 2t - ( 2 - ln ( t^2 + 1 )) dy/dt =0

(c) Find the solution of the linear differential equation
x dy/dx +2=x^2 -x +1

2007-11-08 01:45:00 · 2 answers · asked by fm_hyudin 1 in Mathematics

the space between gas particles is ,uch less than the space between liquid or soild particles.

its volume in creases more under pressure than an equal volume of liquid does.

2007-11-08 01:43:25 · 2 answers · asked by Trey C 1 in Physics

just read a book called moonfleet, its about smugglers on the dorset coast, does the village of moonfleet actually exist, and if so where is it.

2007-11-08 01:40:13 · 1 answers · asked by Anonymous in Geography

a plane whose air speed is 150 miles per hour flew from abbot to blair in 2 hours with a tail wind. on the return trip against the same wind the plane was still 60 miles from abbot after 2 hours.

2007-11-08 01:39:38 · 1 answers · asked by Anonymous in Mathematics

If there is what year it'll be, and will there be something weird gonna happen?

2007-11-08 01:34:36 · 9 answers · asked by ^_^leslie^_^ 1 in Astronomy & Space

I don't drink or smoke or do any type of drugs, not even tylenol, I'll stand my headaches unless I am dying in pain. As a teen, I never had any need to try drugs, no one ever asked me, but even if they did, the answer was always no. But now, 22, sometimes I can understand why someone would want to do them. But I think why is weed and pot illegal, yet cigarrettes which we already know is just a rolled up poison w/ tar and ****, legal? I see cigarette smokers as bad as pot heads. To me, I known a lot of weed smokers, and they actually act the same. They are not out of control and what not. I think at least those drugs are more natural than cigarettes? So the question, yes, people i do ramble a lot, LOL, why are cigarrettes legal yet weed is not? If I had to date an alcoholic or a weedhead, give me the weedhead, I don't see those people as losers or bad anymore....pretty much most guys do it too and those who look clean-cut and normal." I want to hear from actual weed smokers. Thnx

2007-11-08 01:34:22 · 13 answers · asked by Anonymous in Medicine

Anyone know of a site or organization that I could send a picture to that has a suspicious object to find out what it really is? I know there are people that can 'analyze' or magnify to ID things like that. Not saying it's a UFO, but how can one find out?
Thanks

2007-11-08 01:32:26 · 7 answers · asked by rayb1214 7 in Astronomy & Space

these scientists used a common kitchen appliance to help show that phage dna carries instructions to make new phage particles. thinking of making milkshake?

2007-11-08 01:28:43 · 2 answers · asked by bratfoever500 1 in Biology

what are the affect of cold working on metals.

2007-11-08 01:25:35 · 5 answers · asked by Anonymous in Physics

As regards mathematical problems put by students seeking solution I have to make a request to all.

Never give full solution. Many children ask questions expected to be solved by them only. In fact they avoid the labour required for a solution. Perhaps they are not aware that they are harming their learning process.

2007-11-08 01:24:22 · 12 answers · asked by Pramod Kumar 7 in Mathematics