Science & Mathematics - 2 February 2007

some might have been taken to another planet as slaves

2007-02-02 03:33:22 · 12 answers · asked by Anonymous in Astronomy & Space

The vapor pressure of dichloromethane, , at 0.0 C is 134 mmHg. The normal boiling point of dichloromethane is 40.0 C. Calculate the molar heat of vaporization.
ln(P2)=ln(P1)+(heat of vaporization/R[gas constant]) (1/T1-1/T2) **R=8.3145 j/(mol*K)

2007-02-02 03:32:27 · 3 answers · asked by Anonymous in Chemistry

2007-02-02 03:29:48 · 0 answers · asked by laureneebell 1 in Chemistry

A drug manufacturing company wants to manufacture a capsule that contains a spherical pill inside. The diameter of the pill is 4mm and the capsule is cylindrical, with hemispheres on either end. The length of the capsule between the two hemispheres is 10mm. Describe how we could find the exact volume the capsule will hold, excluding the volume of the pill.

2007-02-02 03:29:42 · 3 answers · asked by Anonymous in Other - Science

phosphatidyl serine is a phospholipid
but not sure if its a cephalin or not

2007-02-02 03:29:18 · 2 answers · asked by manasa b 1 in Biology

It is a orange tablet and on oneside it has a lower case b and on the other side there is a scored line in the middle of the tablet and the top number has a 953 and the lower end has a 10. I am juxt wondering what this tablet is? It is supposed to be something like methadone or a upper type drug, like speed.

2007-02-02 03:26:42 · 3 answers · asked by kristy 1 in Medicine

An art dealer sold two artworks for $1520 thereby making a profite of 25% on the first work and 10% profit of the other, where as if he had approached any exhibition he would have sold them together for $1535 with a profit of 10% on the first and 25% on the other artwork. Find the actual cost of each artwork.

2007-02-02 03:25:23 · 5 answers · asked by vmd7878 1 in Mathematics

1.Certain flightless beetles have wings. Their wings are an example of which type of structure?
A.homologous structure

B.vestigial structure

C.embryonic structure

D.adapted structure

2.The forelimbs of mice, bats, and whales all have a similar bone structure. This is an example of which type of evidence of shared ancestry?
A.homologous structures

B.vestigial structures

C.embryonic structures

D.adapted structures

3.Which phrase best defines the term homologous structures?
A.structures that have the same features

B.structures that are so similar that they imply a common ancestor

C.structures that had a function in an ancestor but don't have that function today

D.structures that have the exact same features and functions

2007-02-02 03:23:49 · 3 answers · asked by Gloria 1 in Biology

2007-02-02 03:22:51 · 9 answers · asked by HENRY M 1 in Biology

http://news.bbc.co.uk/1/hi/world/americas/6324985.stm
In the UK we hear about so many in the US; snow, floods,tornadoe's.

2007-02-02 03:21:45 · 9 answers · asked by Anonymous in Geography

Hallo, I'm interested in saanen goat and I want to by about a dozen of goats(and some kids) .. but I want to be sure that they are endurable and will endure the frozen weather in winter.. so, I want to know the minimum of the temperature in which they still feel themselves fine..

2007-02-02 03:18:22 · 1 answers · asked by Anonymous in Zoology

2007-02-02 03:18:03 · 4 answers · asked by Anonymous in Geography

200 g of steam at 100 degrees C is added into the mixture. Find the final temperature of the mixture

Cs = 3764.4 J/kg C
Ci = 2140 J/kg C
Cw = 4186 J/kg C

2007-02-02 03:17:54 · 2 answers · asked by fatalmelody 2 in Physics

I need a reliable chemistry site that can help me find the melting points of several chemicals. The ones i need include the melting points for caffeine, salicylic acid, NaCl (table salt), acetaminophen, and glucose.

2007-02-02 03:15:44 · 8 answers · asked by lpswimmer05 2 in Chemistry

Where we can see images of India from space?

2007-02-02 03:14:51 · 7 answers · asked by Robert Purde 1 in Astronomy & Space

ANNNYYY help is so grrreeeaaatllly appretiated!!

2007-02-02 03:12:34 · 21 answers · asked by ohsbabygirl22 1 in Mathematics

2007-02-02 03:12:08 · 10 answers · asked by WELL SAID ERFMAN JACK 2 in Physics

2007-02-02 03:11:26 · 2 answers · asked by Mohammed E 1 in Engineering

antimicrobial actibities of Avicennia officinalis.

2007-02-02 03:10:30 · 1 answers · asked by sree25dey 1 in Botany

She occurs with the mechanics of the Land, interacting with the magnetism of the Sun opposes to the one of the Interstellar System. E you! Which its version?

2007-02-02 03:09:36 · 1 answers · asked by britotarcisio 6 in Physics

2007-02-02 03:09:05 · 7 answers · asked by Anonymous in Astronomy & Space

At a certain temperature the reaction

2N2O5 → 4NO2 + O2

is a first order reaction with t1/2 = 127.0 sec

What is the rate constant for this reaction (1/sec) ?

2007-02-02 03:08:25 · 4 answers · asked by enba18 1 in Chemistry

2007-02-02 03:06:38 · 13 answers · asked by ohsbabygirl22 1 in Mathematics

2007-02-02 03:06:20 · 19 answers · asked by Anonymous in Astronomy & Space

2007-02-02 03:06:09 · 2 answers · asked by ۞ JønaŦhan ۞ 7 in Astronomy & Space

2007-02-02 03:05:12 · 3 answers · asked by astyclark2007 1 in Mathematics

At a certain temperature the reaction

SO2Cl2 → SO2 + Cl2

is a first order reaction with t1/2 = 147.0 x 102 sec

What is the rate constant for this reaction (1/sec) ?

2007-02-02 03:04:42 · 1 answers · asked by Marty Kay 2 in Chemistry

2007-02-02 03:04:38 · 11 answers · asked by Anonymous in Earth Sciences & Geology

will its speed/torque increase?

2007-02-02 03:04:33 · 5 answers · asked by Revi G 1 in Engineering

2007-02-02 03:03:52 · 5 answers · asked by ikram c 1 in Physics