I mostly reblog awesome stuff.
Some of my interests:
Science!
Space!
Music
Movies
Chemistry
Biology
Sci Fi
Ukulele
Hip Hop
Latin
Hayao Miyazaki
And some other stuff.
Structures of solid oxygen under high pressure: At 1.9 TPa, oxygen polymerizes and assumes a square spiral-like structure, which is semi-conducting (top). With increasing pressure, the polymer exhibits metallic properties (zig-zag chain-like phase, mid). Then, the structure changes into a metallic layer phase (bottom). The coloured areas represent the charge density in one layer of the structure. (Credit: © Jian Sun)
Hey chemists! Tired of your word processor vomiting red squiggles all over your papers and lab reports? Check out this custom chemistry dictionary — it’s compatible with Microsoft Office and OpenOffice, and contains over 100,000 entries. (If you’re interested, there’s also a biology/medical dictionary available.)
The word amine (and the adjectival form amino) has a long and surprising history-starting with the Ancient Egyptian king of the gods, Amon Ra. Starting a little closer to home, the word amino was coined in 1887 by shortening the word ammonia which itself was a modern Latinization of the Ancient Greek ammoniakos. The word ammoniakos was the Ancient Greek word to denote ‘of Amon’, from the name of the King of the Egyptian pantheon, Amon-Ra. What is the connection between amines and the King of the Gods? When Swedish chemist Torbern Bergman (1735–1784) coined the word ammonia in 1782, he was thinking of the Roman Temple of Jupiter in Libya, also known to the Greeks as the Temple of Zeus and formerly known as the Temple of Amon-Ra, a source of salt deposits containing ammonium chloride. The building blocks of life and foundation of modern biology, medicine, and genetics are named after the Ancient Egyptian King of the Gods!
Today, amines are defined as organic compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are derivatives of ammonia, wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group.
Image of Amon-Ra by Dennis Jarvis. Image of Temple of Jupiter by Sebastia Giralt. Image of ammonia molecule by Ben Mills. Image of Amino Acid table by Dan Cojocari, University Health Network, University of Toronto. All images used by permission under CC 3.0 license. Definition of Amines courtesy Wikipedia.
I was just wondering about this!
Edman degradation - A simple reaction used in peptide sequencing. This reaction labels the amino-terminal aminoacid of the sequence without breaking the bonds of the entire sequence like other reactants (such as the Sanger reactant) do. This way the aminoacids can be sequenced one by one. Unfortunately, this method is too slow and unpractical for large petides with longer amnoacidic chains, so it is usually applied in combination with other sequencing reactants.
The Kreb’s Cycle aka the Citric Acid Cycle… you fucking perverts.
“a series of chemical reactions which is used by all aerobic living organisms to generate energy through the oxidization of acetate derived from carbohydrates, fats and proteins intocarbon dioxide and water…” (wikipedia)
Maybe it’s because I have spent all my free time the last three days studying for my O Chem midterm but I thought this was the funniest thing ever.
Ka for the weak acid, HA, is 3.5 x 10-6 at a certain temperature. In a 0.230 M solution of the acid at this temperature the degree of ionization is 3.9 x 10-3. Calculate the degree of ionization of the acid at this temperature in a 0.23 M solution to which sufficient HCl is added to make it 1.62 x 10-2 M HCl.
Someone please fucking kill me so I don’t have to do eleven more of these.
