The Heinzelmännchen are a race of creatures appearing in a tale connected with the city of Cologne in Germany.
The little house gnomes are said to have done all the work of the citizens of Cologne during the night, so that the inhabitants of Cologne could be very lazy during the day. According to the legend, this went on until a tailor's wife got so curious to see the gnomes that she scattered peas onto the floor of the workshop to make the gnomes slip and fall. The gnomes, being infuriated, disappeared and never returned. From that time on, the citizens of Cologne had to do all their work by...
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One way to estimate the upper limit of the magnitude is through observations and measurements. According to the article Seismic Wave Interactions Between
the Atmosphere - Ocean - Cryosphere
System and the Geosphere in Polar Regions, a couple of difficulties with determining how large ice-quakes ...
I was solving a question about organic chemistry, but there's a part I didn't know how to solve, here it is:
A is a non cyclic hydrocarbon chain with $\ce{C_{3x-1}H_{6x}}$ as a molecular formula which is mainly used in cars as fuel, its cracking leads to hydrocarbon (B) which belongs to the ...
From the ACD Labs page about IUPAC italicization,it is stated that
Italicizing mainly serves to mark letters which are not involved in the primary stage of alphabetical ordering.
According to the American Chemical Society Style Guide (p. 235), the use of italics for
positional, stereoc...6
While reading about nomenclature of branched alkyl groups, I read that certain common names are also approved by IUPAC. Among those names, only few prefixes are italicised (namely sec- and tert-) and others like iso and neo are printed normally. These names are documented in the IUPAC blue book. ...
With respect to this question as suggested by a user (he asked me to ask this as a separate question), I wanted to know if there is any way in which bulky property of organic compounds be quantified, as to a value that would indicate how bulky a compound is.
The universe is in a long, slow decline to darkness
Sorry folks but it's true, read the article!
My question
Using either your imagination and soft-science or actual hard-science, can you suggest ways that the human race and/or other sentient life-forms stops this eventual decline.
Specifical...
The Edwards equation in organic chemistry is a two-parameter equation for correlating nucleophilic reactivity, as defined by relative rate constants, with the basicity of the nucleophile (relative to protons) and its polarizability. This equation was first developed by John O. Edwards in 1954 and later revised based on additional work in 1956. The general idea is that most nucleophiles are also good bases because the concentration of negatively charged electron density that defines a nucleophile will strongly attract positively charged protons, which is the definition of a base according to Brønsted...
Transcript for
Aug13
Aug '1514
Aug15
The Periodic Table
Haikus are awesome / Chemistry's even better / So pull up a chair
