Natural Science Forum / Chemistry / General Chemistry / January 2005

Since a machine made a splash somewhere, chemistry of methane
solutions at -200 C has become a very interesting topic...
Anyone here knows of references about the properties of
methane solution at those temperatures?

As to calculate %LEL of a mixture C4 to C12 (gasoline)?

I have a gas well about 50 miles from my house. It can supply lots of
gas absolutely free.  But where I live I had to pay over $400 for gas
last month.  Is there any easy way to create something transportable
from the free methane, such as propane or an alcohol? Everything I have

I wanted to know if there's any relationship b/n the peroxide value and
rancidity of a given edible oil??????
tia

Can somebody give a common example of a thermoneutral chemical reaction
(no heat evolved or absorbed)? I thought that every reaction was either
endothermic or exothermic but never heard of a thermoneutral reaction
until browsing a book on chemical kinetics where they just mentioned ...

I have what i thought was a simple question regarding the atomic mass
unit but I haven't been able to find a satisfactory answer anywhere. If
one amu is defined as 1/12 the mass of a carbon-12 atom, then how can a
neutron (1.0087 amu) and a proton (1.0073 amu) both be greater than 1

A letter to the editor in J.Chem.Ed has pointed out that though osmium
is commonly shown in textbooks to be the densest element known to man,
but this is incorrect because NBS circular 539, volume 4 has reported
the ideal densities of Os as 22.583g/ml and that of iridium as 22.661

i have some HCl @ 25% concentration.
would heating or boiling rise up concentration
thanks
y2kbug

How does one prepare dimethylpolysiloxane from dichlorodimethylsilane?

Any idea as to how dichlorotrifluoromethylpolysiloxane hydrolyate can be
made into a foam with the elimanation of hydrogen

May be many of you think that, i am fool enough to ask this question
but on the contrary i hope that any one could help me because i suffer
really form the a deficiency  in electronic resources i have. thanks
for every one

I'm looking for anyone who's either worked or studied in the School of
Chemistry in this University between the year 1999 to 2003. Please
write me a email. Thank you.
Estella

Searching "japan wwii" or "japan atrocities" at amazon.com returns many ...

this is not a fart joke..........
o.k. someone here should know the answer to this.  it's been many
years since i had chemistry, and i'm trying to help my daughter do a
model.

Looking for some help. I'd like to calculate some rates of evaporation
but am not sure how to go about it.
I have an excess amount of process water that I've been paying to
dispose of. I'd like to eliminate this wastestream if possible using