Science & Mathematics - 20 November 2006

2(CH2OH)2 (l) + 5 O2 (g) > 4 CO2 (g) + 6 H2O (l)

The standered heat of combustion for ethylene glycol is -2356 KJ/mol.
CO2 (g) = -393.5 KJ/mol
H20 (l) = - 285.58 KJ/mol

2006-11-20 05:12:26 · 1 answers · asked by Nirmal C 1 in Chemistry

2006-11-20 05:10:52 · 11 answers · asked by j_montgomery_50 2 in Medicine

2006-11-20 05:08:58 · 9 answers · asked by F@t!m@ Guzm@n little misss cutie 2 in Zoology

2006-11-20 05:08:30 · 17 answers · asked by Anonymous in Mathematics

explain how scientist have proven that god is real

2006-11-20 05:08:03 · 25 answers · asked by ? 2 in Physics

2006-11-20 05:06:55 · 9 answers · asked by Anonymous in Mathematics

they are made up of nearly the same thing

2006-11-20 05:06:44 · 9 answers · asked by the genius 1 in Earth Sciences & Geology

You have some equation like:
y=2x^2+3x+4

1)What happen to graph as coeffcient 2 in x^2 increased or decreased?

2) What happen to graph as coeffcient 3 in x increased or decreased?

3) What happen to graph as coeffcient 4 the y-intercept increased or decreased?

CAN U GUYS HELP?

2006-11-20 05:05:31 · 1 answers · asked by Anonymous in Mathematics

2006-11-20 05:04:04 · 20 answers · asked by Anonymous in Medicine

Aqeeous silver nitrate was added to the solution of CaCl2 what would you expect to see? Thanks,

Rock

2006-11-20 05:03:08 · 4 answers · asked by Anonymous in Chemistry

2006-11-20 05:02:06 · 8 answers · asked by arwitta1 1 in Biology

every one knows that heat will flow from body at lower temparature to body at higher temparature with the aid of external agency(work)..ok...consider a refregerator...heat is actually flowing from high temparature products(food ,items ..etc) to low temparature refregerant(which is cooled by expanding to lowpressure)...even with the aid of compressor work..but not from low temparature refregerant to high temprature products..

2006-11-20 05:00:54 · 4 answers · asked by hiris(Hi..RiSK) 1 in Physics

The grid in a high-vacuum triode is usually kept negatively charged with respect to the cathodes so that the electrons may be?

2006-11-20 04:59:51 · 1 answers · asked by elizabeth t 1 in Physics

I no that nuclear energy can be used to form distructive nuclear bombs but it can be also a very useful way to treat some diseases. Please explain to me this fact or support me with a website that dicusses this issue.
Thank you for your help.

2006-11-20 04:59:24 · 4 answers · asked by youyou 1 in Chemistry

2006-11-20 04:58:54 · 5 answers · asked by TAE 1 in Mathematics

2006-11-20 04:58:02 · 2 answers · asked by morgan i 1 in Biology

Hi everyone! I wanted to ask you a Multiple choice question appearing in my exam. The question is as follows:

3 students stand 2 m apart in front of a plane mirror which is 3 m long. Student Y is standing opposite the mid-point of the mirror while the other 2 students are standing 2 m from him in a staight line.


The question is how many students can see the images of the other two?

A) 0
B) 1
C) 2
D) 3


Only one answer is correct. Please explain your answer. I try to copy the figure provided in the question as below: X and Z are standing 2 m from Y who is at the middle of the mirror.

<- Mirror (3m) ->
X <- 2m -> Y <- 2m ->Z

2006-11-20 04:55:29 · 3 answers · asked by Y L 2 in Physics

Determine the general solution to:
Sin x/2 = (square root of 3)/2
Sorry about the square root thing but i cant find it on my keyboard!

2006-11-20 04:55:28 · 3 answers · asked by Anonymous in Mathematics

2006-11-20 04:53:51 · 1 answers · asked by goring 6 in Physics

They asked this on a job application.

2006-11-20 04:53:48 · 18 answers · asked by Mike 1 in Other - Science

when we add Phenophlein to NaoH , it shows pink color. Why?

2006-11-20 04:53:33 · 3 answers · asked by haris 1 in Chemistry

Hi everyone! I wanted to ask you a Multiple choice question appearing in my exam. The question is as follows:

3 students stand 2 m apart in front of a plane mirror which is 3 m long. Student Y is standing opposite the mid-point of the mirror while the other 2 students are standing 2 m from him in a staight line.


The question is how many students can see the images of the other two?

A) 0
B) 1
C) 2
D) 3


Only one answer is correct. Please explain your answer. I try to copy the figure provided in the question as below: X and Z are standing 2 m from Y who is at the middle of the mirror.

<- Mirror (3m) ->
X <- 2m -> Y <- 2m ->Z

2006-11-20 04:51:33 · 4 answers · asked by Y L 2 in Physics

2006-11-20 04:51:06 · 1 answers · asked by goring 6 in Physics

2006-11-20 04:50:59 · 11 answers · asked by sue c 1 in Zoology

aluminum sulfide, aluminum nitride, magnesium nitride, potassium sulfide, calcium phophide, lithium iodide, iron 2 oxide, silver oxide, iron 3 chloride, calcium bromide, copper 1 bromide, beryllium oxide, lead 4 fluoride

2006-11-20 04:50:20 · 3 answers · asked by carboy_carlover 1 in Chemistry

Is the answer correct:
4x^2+13

2006-11-20 04:49:56 · 15 answers · asked by ME 3 in Mathematics

2006-11-20 04:47:07 · 6 answers · asked by prazegrl7 2 in Weather

2006-11-20 04:46:51 · 5 answers · asked by elizabeth t 1 in Chemistry

unfortunately her mummy ant answer so can anyone help??

my question is how do you grab it in the first place but apart from that......

2006-11-20 04:44:05 · 22 answers · asked by maginty 2 in Weather

2006-11-20 04:42:06 · 18 answers · asked by Anthony 2 in Astronomy & Space