The units of resistivity don't come out right.

10^-8 Ohm * m
or
m Ohm * cm

the 'm' should be a 'mu', but unfortunately they both look the same in the latin alphabet.

Is there a DIY ( do it yourself) way of finding out how much sulfur content is present in water?

Doing an esterification practical in my Matric chem class today, we noticed that when the sulphuric acid was added to the mixture of 3-methylbutanol and ethanoic acid, the liquid around the boiling chips or glass beads (there were examples of each with the same result)became coloured browny-orange. Apparantly none of the chem teachers at our school can explain why this would happen, but it was happening consistently. Once the ester was distilled at the end of the procedure, the colour stayed with any ester that was undistilled. Can anyone explain why this would happen? Thanks.

i wanna know about the relation between density and percentage of sulfuric acid - water. can anyone please to share the url, or to share the chart? i really need it. thanks before

Researchers from the Massachusetts General Hospital in Boston (USA) have announced that hydrogen sulfide (sulphide) gas, H₂S, can induce a state of suspended animation in mice while maintaining normal blood pressure. It is hoped that this result eventually will help in the treatment critically-ill patients. This result was presented at the American Physiological Society conference, "Comparative Physiology 2006: Integrating Diversity," in Virginia Beach, Virginai, USA, October 2006.

Hydrogen sulfide (sulphide) gas, sometimes called sewer gas, produces a noxious odour often described as a rotten egg smell. This highly toxic gas occurs naturally in swamps, some springs, and volcanoes.

Trace amounts of manganese is essential to human health. Now, a team of scientists from the University of Delaware, Scripps Institution of Oceanography, the University of Hawaii, and Oregon Health and Science University has found that a dissolved form of manganese, Mn(III), is important in waterways such as the Black Sea and Chesapeake Bay. It can keep toxic hydrogen sulfide (sulphide) zones in check.

The research is based on research conducted in 2003 that explored the chemistry of the Black Sea. Nearly 90% of the mile-deep system is a no-oxygen "dead zone," containing large amounts of naturally produced hydrogen sulfide (sulphide), which is lethal to most marine life. Only specialized microbes can survive in this underwater region.

Nickel gallium sulfide (NiGa₂S₄) behaves as a highly unusual "liquid" magnetic material at near absolute zero, according to Japanese and US researchers. Read David Bradley's spin on the work in his chemistry news column.

Dutch researchers have figured out why the activity of catalysts used to produce clean fuels gradually falls. Read David Bradley's report on the findings in Reactive Reports together with other chemistry articles

Newly discovered sulfur-containing scent molecules in sweat produced by a bacterial enzyme point to our smelly past and could lead to an odor-free future, writes David Bradley in Issue 41 of the chemistry webzine Reactive Reports.