Science & Mathematics - 2 February 2007

i know its because of the sugar being convertd from starch but why does it do that and what chemical process take place to cause this?

2007-02-02 08:01:58 · 2 answers · asked by Anonymous in Botany

2007-02-02 08:01:48 · 1 answers · asked by Anonymous in Geography

2007-02-02 08:00:56 · 3 answers · asked by Anonymous in Mathematics

Stannous fluoride or tin fluoride,SnF2, is an ingredient that is able to decrease tooth decay.

a. would you calculate the atomic mass, molecular mass, or formula mass of stannous floride? Explain how you came to this decision??

b. What is the value for SnF2??

c. Avogadro's number is equal to 6.0221 x 10^23. How many fluoride ions are in 15.00 g of stannous fluoride??

2007-02-02 07:58:34 · 1 answers · asked by Tracey Lee ♥ 2 in Chemistry

ok, i have a huge chem test soon and i need help.
its kind of like a midterm and its on ALOT of topics. i am really bad with chem, so I need help. also, my teacher doesnt teach and i need help with these topics...can someone help me please?

have missed my chemistry class for acouple weeks b/c i have been sick. my teacher just gave me a ton of work which i need help with. can you teach me about these topics please??
thankss

What is the purpose of the actvity series?
What is the mole(value, what it is used for)?

Discuss the Gas Laws- (Boyle, Charles, Ideal)

Discuss endothermic/exothermic reactions.
What are reactions at equilibruim?

pH scale --acid base and neutral(examples)

2007-02-02 07:56:50 · 3 answers · asked by nice too meet you. 4 in Chemistry

I was wondering how to find the radius of the area. In my math book, it says this is how to solve it:
A= 3.14 r2 (squared)
256(3.14)=3.14 r2 (squared)
256= r2 (squared)
r=16


Any ideas? To me, this solution doesn't make sense. It will if someone can tell me why they got 16 and so on.

Thanks!

2007-02-02 07:55:58 · 5 answers · asked by Dawn 1 in Mathematics

My mom never explained it to me.....

2007-02-02 07:52:57 · 28 answers · asked by (BaBii) (DeSii) 2 in Biology

2007-02-02 07:52:56 · 4 answers · asked by Texas Made 1 in Earth Sciences & Geology

if it is possible,then we should doubt about einstein teoris?is it true tht ufos(if they exist)prove tht einstein was wrong about hes teoris?
imagine E^2-c^2P^2=m^2c^4
and p is the distance...if m2>0,then E>cp,we use it for attoms,and microscopic materials
M2=0,so vc ?r tachyons exist?

2007-02-02 07:50:52 · 2 answers · asked by Anonymous in Physics

(in the meaning of life)

2007-02-02 07:50:37 · 8 answers · asked by jokeregehan 1 in Mathematics

A positron (a particle with a charge of +e and a mass equal to that of an electron) that is accelerated from rest between two points at a fixed potential difference acquires a speed of 9.0 x 10^7 m/s.
What speed is achieved by a proton accelerated from rest between the same two points? (Disregard relativistic effects.) Answer in m/s.

2007-02-02 07:47:36 · 1 answers · asked by Derrick Z 1 in Physics

This is kind of a weird question but yeah.

2007-02-02 07:47:27 · 11 answers · asked by El Hombre 2 in Physics

10^0.475 = x / (0.0635 - x) Please help me and show the steps as much as possible. The answer is x = 0.0159.

2007-02-02 07:46:40 · 4 answers · asked by Daisy 1 in Mathematics

Can anyone help?

A 8.5 kg mass is given an initial velocity of 13 m/s up an incline that makes an angle of 37° with the horizontal. When its displacement is 8 m, its upward velocity has diminished to 5.2 m/s.
(a) Find the coefficient of kinetic friction between the mass and the plane.
(b) Find the displacement of the mass from its starting point at the time when it momentarily comes to rest.
(c) Find the speed of the block when it again reaches its initial position.

2007-02-02 07:44:08 · 1 answers · asked by Froggiesmiles 3 in Physics

Please tell me why we can't split carbon dioxide using either a filter or some process so that we're left with carbon and oxygen? Then we could place this filter or mechanism into a chimney or other carbon dioxide producing outlet; collect the carbon and release the oxygen. Please tell me why we can't do this? We can do it easily with other gasses, such as to power hydrogen cars, so why can't we do it with carbon dioxide to reduce our carbon emissions into the atmosphere? Thanks.

2007-02-02 07:43:41 · 8 answers · asked by Artist V 2 in Chemistry

2007-02-02 07:43:19 · 4 answers · asked by TERESA L M 1 in Medicine

On engineering drawings whats the LG mean?

2007-02-02 07:40:27 · 7 answers · asked by oxide23 1 in Engineering

2007-02-02 07:40:09 · 1 answers · asked by Russie 1 in Chemistry

I did about 6-8 balloons within three hours.

2007-02-02 07:38:13 · 26 answers · asked by KR7 5 in Chemistry

hiya people say its not the current that kills you but the amps......so if the voltage is 240v and the watts is 20 w please could someone tell me the ampage is and if this is enogh to kill you,

Thanks

Nasser

2007-02-02 07:33:51 · 8 answers · asked by nasserc267 1 in Physics

I am having trouble answering this question: http://www.actstudent.org/sampletest/test4/math4/mcorr9.html. I have to find what x is.

I see the answer, but I am confused how to arrive at it. Can someone please give a more detailed explanation of how to get the answer. Thanks.

2007-02-02 07:33:25 · 7 answers · asked by Anonymous in Mathematics

A glider of mass 0.250 kg moves on a horizontal frictionless airtrack. It is permanently attached to one end of a massless horizontal spring, which has a force constant of 13.0 N/m both for extension and for compression. The other end of the spring is fixed. The glider is moved to compress the spring by 0.180 m and then released from rest.

(a) Calculate the speed of the glider at the point where it has moved 0.180 m from its starting point, so that the spring is momentarily exerting no force.
(b) Calculate the speed of the glider at the point where it has moved 0.250 m from its starting point.

2007-02-02 07:31:49 · 1 answers · asked by Victoroza 1 in Physics

I know that it's a random question, but I HAVE TO KNOW!!!!

2007-02-02 07:31:49 · 1 answers · asked by DJ 1 in Zoology

i'm assuming its to do with temperature if so what persentage is heat and how much of the energy is converted to light

2007-02-02 07:30:50 · 9 answers · asked by only me 1 in Chemistry

do you look at them? what is your favorite? and where is it?

2007-02-02 07:28:13 · 5 answers · asked by Mystee_Rain 5 in Astronomy & Space

2007-02-02 07:26:59 · 5 answers · asked by ppsam 1 in Geography

2007-02-02 07:26:53 · 6 answers · asked by Anonymous in Zoology

I think it is 3000 ft and my friend says 2000 ft.

2007-02-02 07:26:17 · 11 answers · asked by Anonymous in Geography

step by step process is appreciated

2007-02-02 07:25:29 · 3 answers · asked by Anonymous in Mathematics

If a butterfly flaps his wings and can theoretically cause a hurricane on the other side of the planet,
isn't is safe to assume a fart can generate a tornado?
Should we start sending Beano to china?
our coast's really cant take much more abuse.

2007-02-02 07:21:05 · 2 answers · asked by fighterace26 3 in Weather